Abstract
Aim The aim of this official guideline, published and coordinated by the German (DGGG), Austrian (OEGGG) and Swiss (SGGG) Societies of Gynecology and Obstetrics in collaboration with the DMykG, DDG and AGII societies, was to provide consensus-based recommendations obtained by evaluating the relevant literature for the diagnosis, treatment and management of women with vulvovaginal candidosis.
Methods This S2k guideline represents the structured consensus of a representative panel of experts with a range of different professional backgrounds commissioned by the Guideline Committee of the above-mentioned societies.
Recommendations This guideline gives recommendations for the diagnosis, management, counseling, prophylaxis and screening of vulvovaginal candidosis.
Key words: Candida albicans, guideline, pruritus, vulvovaginal candidosis
I Guideline Information
Guidelines program of the DGGG, OEGGG and SGGG
For information on the guidelines program, please refer to the end of this guideline.
Citation format
Vulvovaginal Candidosis (Excluding Mucocutaneous Candidosis): Guideline of the German (DGGG), Austrian (OEGGG) and Swiss (SGGG) Society of Gynecology and Obstetrics (S2k-Level, AWMF Registry Number 015/072, September 2020). Geburtsh Frauenheilk 2021; 81: 398 – 421
Guideline documents
The complete long version and a slideshow version of this guideline as well as a list of the conflicts of interest of all of the authors are available in German on the homepage of the AWMF: http://www.awmf.org/leitlinien/detail/ll/015-072.html
Guideline authors
Table 1 Lead author and/or coordinating guideline author.
| Author | AWMF professional society |
|---|---|
| Priv.-Doz. DDr. Alex Farr | Austrian Society of Gynecology and Obstetrics (OEGGG), Germany Society of Gynecology and Obstetrics (DGGG) |
Table 2 Contributing guideline authors.
| Author Mandate holder |
DGGG working group/AWMF/non-AWMF professional society/ organization/association |
|---|---|
| Prof. Dr. Isaak Effendy | German Diabetes Society (DDG) |
| Priv.-Doz. DDr. Alex Farr | OEGGG/DGGG |
| Dr. med. Brigitte Frey Tirri | Swiss Society of Gynecology and Obstetrics (SGGG) |
| Prof. Dr. Herbert Hof | German-speaking Mycological Society (DmykG) |
| Prof. Dr. Peter Mayser | German Diabetes Society (DDG) |
| Prof. Dr. Werner Mendling | German Society of Gynecology and Obstetrics (DGGG) |
| Prof. Dr. Ljubomir Petricevic | Austrian Society of Gynecology and Obstetrics (OEGGG) |
| Prof. Dr. Markus Ruhnke | German-speaking Mycological Society (DmykG) |
| Prof. Dr. Martin Schaller | German Diabetes Society (DDG) |
| Priv.-Doz. DDr. Axel Schäfer | Working Group on Infections and Immunology (AGII) |
| Prof. Dr. Birgit Willinger | German-speaking Mycological Society (DmykG) |
Abbreviations
- Ab
antibodies
- BMI
body mass index
- C
Candida
- CDC
Centers for Disease Control and Prevention
- CF
cystic fibrosis
- ECHA
European Chemicals Agency
- GBS
group B Streptococcus
- GDM
gestational diabetes mellitus
- IUS
intrauterine system
- KOH
potassium hydroxide
- Lcr35
Lactobacillus casei rhamnosus 35
- LNG
levonorgestrel
- MIC
minimal inhibitory concentration
- MPA
medroxyprogesterone acetate
- OTC
over-the-counter
- PCR
polymerase chain reaction
- PVP-I
povidone-iodine
- RVVC
recurrent vulvovaginal candidosis
- VVC
vulvovaginal candidosis
II Guideline Application
Purpose and objectives
The purpose of this guideline is to provide optimal care for patients with vulvovaginal candidosis in outpatient, semi-inpatient and inpatient care settings. Other objectives are the prevention and early detection of vulvovaginal candidosis. The aim is to describe targeted diagnostic procedures and treatments for cases with specific symptoms. This should prevent unnecessary treatment and thereby also reduce the potential for patients to develop resistance to treatment.
Targeted care settings
outpatient care
semi-inpatient care
inpatient care
specialized care
Target user groups/target audience
hospital-based gynecologists
gynecologists in private practice
hospital-based dermatologists
dermatologists in private practice
hospital-based microbiologists
microbiologists in private practice
Additionally
general practitioners
hospital-based midwives
midwives in private practice
nursing staff
biomedical analysts
medical and scientific societies and professional associations
health policy institutions and decision-makers at regional and national levels
funding bodies
Adoption and period of validity
The validity of this guideline was confirmed by the executive boards/heads of the participating professional societies/working groups/organizations/associations as well as by the boards of the DGGG, the DGGG Guideline Commission, the SGGG and the OEGGG in September 2020 and was thus approved in its entirety. This guideline is valid for the period from 1st September 2020 through to 31st August 2025. Because of the contents of this guideline, this period of validity is only an estimate.
III Methodology
Basic principles
The method used to prepare this guideline was determined by the class to which this guideline was assigned. The AWMF Guidance Manual (version 1.0) has set out the respective rules and requirements for different classes of guidelines. Guidelines are differentiated into lowest (S1), intermediate (S2), and highest (S3) class. The lowest class is defined as consisting of a set of recommendations for action compiled by a non-representative group of experts. In 2004, the S2 class was divided into two subclasses: a systematic evidence-based subclass (S2e) and a structural consensus-based subclass (S2k). The highest S3 class combines both approaches.
This guideline has been classified as S2k .
Grading of recommendations
A grading of evidence based on the systematic search, selection, evaluation and synthesis of an evidence base which is then used to grade the recommendations is not envisaged for S2k guidelines. The different individual statements and recommendations are only differentiated linguistically, not by the use of symbols ( Table 3 ).
Table 3 Grading of recommendations.
| Level of obligation to comply with the recommendation | Terminology |
|---|---|
| Strong recommendation, highly binding | must/must not |
| Recommendation, moderately binding | should/should not |
| Open recommendation, not binding | may/may not |
Statements
Expositions or explanations of specific facts, circumstances or problems without any direct recommendations for action included in this guideline are referred to as “statements”. It is not possible to provide any information about the grading of evidence for these statements.
Achieving consensus and level of consensus
At structured NIH-type consensus-based conferences (S2k/S3 level), authorized participants attending the session vote on draft statements and recommendations. The process is as follows. A recommendation is presented, its contents are discussed, proposed changes are put forward, and finally, all proposed changes are voted on. If a consensus is not achieved (> 75% of votes), there is another round of discussions, followed by a repeat vote. Finally, the extent of consensus is determined based on the number of participants ( Table 4 ).
Table 4 Level of consensus based on extent of agreement.
| Symbol | Level of consensus | Extent of agreement in percent |
|---|---|---|
| +++ | Strong consensus | > 95% of participants agree |
| ++ | Consensus | > 75 – 95% of participants agree |
| + | Majority agreement | > 50 – 75% of participants agree |
| – | No consensus | < 51% of participants agree |
Expert consensus
As the term already indicates, this refers to consensus decisions taken specifically with regard to recommendations/statements made without a prior systematic search of the literature (S2k) or where evidence is lacking (S2e/S3). The term “expert consensus” (EC) used here is synonymous with terms used in other guidelines such as “good clinical practice” (GCP) or “clinical consensus point” (CCP). The strength of the recommendation is graded as previously described in the chapter on the grading of recommendations; it is only expressed semantically (“must”/“must not” or “should”/“should not” or “may”/“may not”) without the use of symbols.
IV Guideline
1 Definition
VVC is an infection of the substantially estrogenized vagina and vestibulum, which can spread to the external surface of the labia minora and the labia majora as well as to the intercrural and perianal region. There are no known cases of candidosis of the cervix or the endometrium. Congenital fetal candidosis and Candida amnionitis are very rare but possible. The terms “candidosis” or “ Candida albicans vulvovaginitis” are preferred 1 . The ending “-iasis” should be reserved for parasitic infections (e.g., trichomoniasis) 2 but is often used because of its widespread use in English-language texts.
2 Microbiology
In vitro, Candida albicans forms blastospores, germ tubes, pseudomycelia, and true mycelia as well as chlamydospores on special culture medium. Candida glabrata only forms blastospores. Pseudohyphae formation (with the exception of C. glabrata and some other Candida types, which occur in the form of blastospores) is an indication of infection 3 , 4 . In premenopausal, pregnant, asymptomatic and healthy women as well as women with acute VVC, C. albicans is the causative species in 85 – 95% of cases. This species (spp.) is very similar to C. africana which can only be identified with the help of special diagnostic procedures 5 , 6 . Precise epidemiological data for this are lacking. There are regional differences in the distribution of Candida species, although studies from German-speaking 7 , 8 and English-speaking 9 areas report similar numbers. In a retrospective PCR-based analysis of 93 775 cervicovaginal smears over 4 years which were taken to evaluate the cause of VVC, C. albicans was present in 89%, C. glabrata in 7.9% and other Candida species in less than 2% of cases 10 . Non- Candida albicans types, particularly C. glabrata , are found more often in postmenopausal, diabetic, and immunosuppressed women 8 , 11 , 12 , 13 , 14 , 15 , 16 . C. krusei , C. guilliermondii , C. tropicalis , C. parapsilosis and other species may cause vulvovaginitis and its typical symptoms in individual cases 4 , 8 , 17 , 18 , 19 . Saccharomyces cerevisiae is basically apathogenic and therefore causes no symptoms 20 , 21 , even if it is present as a commensal organism in 1 – 2% of vaginal cultures 8 , 15 .
3 Virulence factors
The pathogenesis of VVC depends not only on the virulence of the pathogen but also on the individualʼs predisposition and immune response. Yeast pathogens are generally typical opportunists which can cause infection when the local or systemic immune response is weak. It is still not clear why simple colonization with Candida in a healthy person can result in an acute, highly infectious disorder.
The lack of knowledge about the shift from colonization to vaginitis confirms the importance of host factors 22 . Colonization is followed by adherence to the vaginal epithelium, then by invasion, infection and inflammation aided by the pathogenʼs virulence factors. Fungal components are created during pseudohyphae formation, stimulating strong chemotaxis by granulocytes which then causes inflammation 23 .
Adherence of Candida cells 24 to the vaginal wall is facilitated by mannoproteins 25 , 26 . The ability to form (pseudo) hyphae and secrete hydrolytic proteins are relevant virulence factors 27 , 28 , 29 , which are correlated with pathogenicity 30 , 31 . Siderophores and pH tolerance 32 as well as the presence of enzymes which allow Candida albicans to survive in macrophages 33 are other important mechanisms for the development of infection.
In an acute infection, the formation of virulence factors and immune-inflammatory factors appears to activate the inflammasomes of the vaginal epithelial cells. Components of the fungal wall such as glucan, mannan and chitin bind to specific macrophage receptors and stimulate different cytokines 34 . One of the preconditions for invasion by Candida is the yeast-hypha transition, which is encouraged by the presence of estrogens, as fungi contain cytoplasmic estrogen receptors 35 .
4 Genital colonization
As colonization is connected to vaginal estrogenization, it is far less common in girls who have not yet begun menstruating or women after menopause (who are not taking hormone replacement therapy) and they almost never have VVC 36 . Overall, there is no clear indication for an increased incidence of candidosis in gynecology, neither acute nor chronic recurrent disease. According to the results from culture-based detection methods, around 30% of pregnant women are affected in the third trimester of pregnancy 8 , 16 .
The use of PCR significantly improves the detection of vaginal colonization 37 . However, the extent of vaginal colonization will vary at different times in each individual. It should be noted that positive findings for C. glabrata usually only indicate colonization. Risk factors for colonization with Candida spp., which occurs in around 70% of all young healthy women, are reported to be recent sexual intercourse, injection of the ovulation inhibitor medroxyprogesterone acetate (MPA) and colonization with lactobacilli and group B Streptococcus (GBS) 38 .
The partnerʼs sperm may be colonized by the identical Candida strain found in the vagina 39 , even though the partner may be asymptomatic. Candida balanitis requires treatment; however, temporary redness of the glans after sexual intercourse with a Candida -colonized woman may also be a reaction. It is not clear whether colonization of the partnerʼs genital tract or of the orointestinal tract of both partners could play a role as the source of chronic recurrent episodes of Candida vaginitis 4 , 40 .
5 Predisposing host factors
5.1 Diabetes mellitus
Patients with diabetes mellitus suffer more often from VVC, and treatment usually fails when serum glucose levels are not within normal ranges 11 , 41 . Increased glycemia in vaginal tissue increases fungal adhesion and fungal growth and predisposes vaginal epithelial cells to bind yeast cells. Moreover, glucose levels of 10 – 11 mmol/l impairs the hostʼs defense mechanism. Hyperglycemia reduces neutrophil migration and weakens their chemotactic and phagocytic ability, increasing the hostʼs susceptibility to VVC 42 , 43 . Antidiabetic SGLT2 inhibitors increase glycosuria, thereby also increasing the number of episodes of VVC 44 , 45 , 46 . If diabetic women experience recurrent episodes of VVC, their antidiabetic medication may need to be checked and adjusted 47 .
5.2 Antibiotics
Women with prior vaginal Candida colonization have a 33% higher risk of developing VVC after treatment with antibiotics 48 , 49 , 50 , 51 . The most commonly prescribed and most effective prophylaxis against VVC is to take 150 mg fluconazole when also taking antibiotics, with fluconazole taken either at the beginning and at the end of the course of antibiotics or just once a week. Another option consists of taking oral or vaginal probiotics when taking antibiotics 52 .
5.3 Vaginal microbiota
Lower numbers of lactobacilli were found in women with VVC compared to those without VVC 53 . Certain lactobacilli have an antagonistic effect on Candida species 54 , 55 . This antagonistic effect has been reported for special strains such as Lactobacillus rhamnosus 56 , 57 , 58 , 59 , 60 . The protection proved by lactobacilli is primarily based on the ability of lactobacilli to adhere to vaginal epithelial cells, thereby inhibiting the growth of pathogens 61 .
5.4 Hormonal factors
The glycogen stored in the vaginal epithelium under the influence of estrogen serves as a nutritive medium for fungi 62 . Estrogens also promote the formation of inhibitors by epithelial cells which hinder the antimycotic function of granulocytes, leading to leukocyte anergy 23 , 47 , 63 . Because of the association with estrogen levels and high glycogen levels, VVC symptoms are usually reported mid-cycle or in the luteal phase of the menstrual cycle, with symptoms decreasing rapidly during menstruation 62 . Postmenopausal women are significantly more often affected by VVC if they are taking hormone replacement therapy 64 .
5.5 Contraceptives
It has been reported that taking oral contraceptives increases the incidence of VVC, but this appears to depend on the dosage of the estrogen component 65 . Progestogens by themselves appear to exert a protective effect against VVC 47 , 66 . As regards the use of contraceptive coils, Donders et al. 43 recommend that women with chronic RVVC and women who have an increased risk of VVC should avoid levonorgestrel-releasing intrauterine systems (LNG-IUS).
5.6 Genetic factors
Genetic factors (e.g., gene polymorphisms of mannose-binding lectin 67 , 68 and non-secretor phenotypes of AB0 and Lewis blood groups) may also be responsible for relapses of VVC 69 . As infection equals colonization plus disposition, immunosuppressed women suffer more often from VVC 70 . Ab-producing B cells are considered to offer some protection against VVC 71 , 72 , 73 , 74 , 75 . Women with atopic diathesis and type I allergies develop VVC more often than healthy women do 76 .
5.7 Lifestyle factors
Sexual behavior may result in a relapse of VVC 48 , 77 , 78 . It is presumed that psychosocial stress may trigger chronic RVVC due to immunosuppression 79 , 80 . Candidosis has a negative impact on patientsʼ work life and social life. Some specialists are also of the opinion that patientsʼ diet may be relevant for the development of VVC 81 , 82 .
6 Clinical symptoms
Premenopausal women usually suffer from vaginal candidosis, which can spread to the vestibulum and the vulva, while postmenopausal women primarily experience symptoms in the groin/inguinal area and the vulva. Candida cervicitis is unknown. In premenopausal women, symptoms typically occur prior to menstruation, when estrogen-induced cell proliferation and progesterone-induced cytolysis release glycogen which is then metabolized by lactobacilli, leading to increased tissue glucose levels 83 .
From a clinical and therapeutic standpoint, differentiating between complicated and uncomplicated cases is recommended 4 . In around 90% of cases, itching is the most important although not the most reliable symptom; only 35 – 40% of women who complain of itching actually have VVC 8 , 37 , 84 . Vaginal discharge may vary. At the start of an episode of VVC, the consistency of discharge is often thin, usually whitish and curdy, while there may be no discharge at all in cases with chronic RVVC 42 , 85 . In contrast to bacterial vaginosis, the discharge occurring with VVC does not have an offensive smell 42 .
In addition to itching of the vulva and/or in the vagina, most patients with VVC complain of vaginal redness, soreness, burning, dyspareunia and dysuria 42 . But these symptoms by themselves often do not permit the clinician to reliably differentiate between the causes of vaginitis. Itching and redness are not always present in VVC 84 . The labia minora may be edematous, while burning fissuring is common, especially in cases with RVVC.
Typical VVC symptoms are usually caused by C. albicans ; C. glabrata vaginitis is rare and usually only occurs in late premenopause and perimenopause 9 , 17 , 86 , 87 , 88 . C. krusei vaginitis 19 and C. parapsilosis vaginitis 18 have a similar presentation as C. glabrata vaginitis, with only mild clinical symptoms. Saccharomyces cerevisiae are an unlikely cause of vaginitis 20 , 21 , 89 . Dermatologically, vulvar candidosis is differentiated into vesicular, eczematoid and follicular forms. Women with secondary vestibulodynia often report VVC prior to an episode of vestibular pain.
Overall, VVC symptoms result in a reduction of patientsʼ quality of life comparable to that of patients suffering from bronchial asthma or chronic, obstructive bronchitis. VVC is therefore also associated with significantly lower productivity in professional and daily life 90 .
7 Diagnostic procedures
7.1 Necessary diagnostic procedures
To obtain a diagnosis, (pseudo) hyphae must be present to allow detection of Candida -related vaginitis and differentiate it from asymptomatic colonization. The diagnosis must be based on the patientʼs history, a gynecological examination, and microscopic examination of the vaginal discharge using a saline solution (or alternatively a 10% potassium hydroxide solution) at a magnification of at least 400 × (10 × ocular lens plus 40 × objective lens) under a light microscope or phase-contrast microscope 20 , 91 . pH measurement may also be done, if necessary. Blastospores or (pseudo) hyphae are found on microscopic examination in around 50 – 80% of cases with acute VVC 4 , 92 . An increased number of leukocytes may be found in the discharge, although that is not always necessarily the case. If no blastospores or (pseudo) hyphae are found on microscopic examination, the number of pathogens is probably so low that microscopic examination, which has a low sensitivity, will be negative. As culturing is more sensitive and because infection may be triggered even if the fungal load is low, culturing and determination of species should be done, especially in patients with chronic RVVC. As resistance is not correlated with the MIC, their identification is not of primary importance 83 , 93 , 94 .
The typical medium used in the culture-based diagnosis of Candida species is Sabouraud 2% glucose agar. Other media include CHROMagar ™ and Mikrostix- Candida . Chromogenic culture media offer the opportunity to identify specific Candida spp. immediately, based on their pigmentation, making it easier to identify and differentiate mixed cultures when several different yeast strains are present. In such cases, the patient will typically be suffering from C. albicans vaginitis, while the generally resistant C. glabrata often remains in situ following treatment. C. glabrata is usually only present in the form of colonization and treatment is not required if symptoms are absent. In vitro sensitivity testing should only be considered if non- Candida albicans species are present and in cases with chronic recurrent infection.
Modern DNA hybridization testing of the vaginal discharge obtained from the speculum used for the gynecological examination has a sensitivity and specificity of up to 96.3% for the detection of Candida spp. 95 . Detection based on whole genome sequencing has the highest sensitivity and specificity of all Candida diagnostic procedures 96 .
7.2 Unnecessary diagnostic procedures
8 Therapy
8.1 Therapy for acute Candida vaginitis
Asymptomatic vaginal colonization does not require treatment, even if high numbers of pathogens are present, as long as the patient is immunocompetent and does not suffer from chronic RVVC. If infection is present, the patient will require treatment even when the pathogen count is low. There are numerous therapeutic options 97 . The following substances are used for treatment: azoles prevent the conversion of lanosterol to ergosterol in yeast cell membranes 98 ; polyenes form complexes using the ergosterol in yeast cell membranes and changing their permeability 99 ; ciclopirox olamine hampers important iron-dependent enzymes through the formation of chelate 100 . A lower-dosage suppressive therapy may be considered for patients with chronic RVVC. Such a regimen would consist of 200 mg oral fluconazole 3 days per week (for 1 week); if the patient is then symptom-free and mycology tests are negative, maintenance therapy is continued with 200 mg oral fluconazole once a week for 2 months, then every 2 weeks for 4 months, and finally once a month for 6 months.
Vaginal suppositories and creams are available in dosages and preparations for treatments lasting between 1 and 3 days or between 6 and 7 days 101 . Alternative treatment options for non-pregnant women consist of oral triazoles (fluconazole, itraconazole, posaconazole, voriconazole), polyenes (nystatin) 4 , 102 , 103 , or ciclopirox olamine ( Table 5 ) 104 .
Table 5 Treatment options for acute Candida vaginitis.
| Topical therapy (for a first-time manifestation) | ||
| Clotrimazole | 200 mg vaginal tablets 1 × daily for 3 days | |
| single 500 mg vaginal tablet | ||
| Econazole | 150 mg vaginal suppository 2 × daily every 12 hours | |
| 150 mg vaginal suppository 1 × daily for 3 days | ||
| Fenticonazole | 600 mg vaginal capsule 1 × daily | Repeat if required |
| Isoconazole | 150 mg vaginal suppository 2 × daily every 12 hours | |
| 150 mg vaginal suppository 1 × daily for 3 days | ||
| single 600 mg vaginal suppository | ||
| Alternative therapies (in cases with a massive first-time manifestation) | ||
| Fluconazole | single oral 150 mg dose | |
| 50 mg orally 1 × daily for 7 – 14 days | ||
| 100 mg orally 1 × daily for 14 days | For immunosuppressed patients | |
| Itraconazole | 100 mg orally 2 × 2 capsules daily postprandial | |
| 100 mg orally 1 × 2 capsules daily for 3 days | ||
| Nystatin | 100 000 IU vaginal tablet for 14 days | |
| 200 000 IU vaginal tablet for 6 days | ||
| Ciclopiroxolamine | 50 mg (1 applicator filling) 1 × daily for 6 – 14 days | poss. procured through an international pharmacy |
8.2 Side effects
All established vaginal and topical antifungals are tolerated well. Azoles and ciclopirox olamine may cause slight local burning in 1 – 10% of cases 7 , 103 . Unfortunately, local irritation leads to a reduction in patient compliance and may be mistakenly interpreted as resistance to therapy 105 . Allergic reactions are possible but rare. Hydrophilic fluconazole and lipophilic itraconazole rarely cause any side effects when administered using standard dosages. In systemic therapy, however, itraconazole causes significantly more side effects than fluconazole (e.g., anaphylactoid reactions, headaches, etc.). With systemic azole therapy, it is important to be aware of possible interactions with other therapeutic agents, particularly if they are metabolized through cytochrome P450 3A4 enzymes. Prior to any topical application of azole antifungal agents, patients must be informed that these agents may impair the functionality and reliability of rubbers diaphragms and latex condoms.
8.3 Development of resistance
8.4 Therapy of non- Candida albicans vaginitis
Although when Candida glabrata is detected, it is often only an indication of colonization, standard vaginal or oral treatments will be unsuccessful when treating true Candida glabrata vaginitis. Topical administration of nystatin or ciclopirox olamine may be considered for Candida glabrata vaginitis.
Candida krusei vaginitis is resistant to fluconazole and itraconazole and partially resistant to posaconazole and some imidazoles. After starting primary therapy with topical 100 mg clotrimazole for 2 weeks, therapy with ciclopirox olamine 20 or nystatin 19 may be initiated. There are almost no studies on the effects of treatment because such cases are very rare.
While C. dubliniensis is sensitive to imidazole, it tends to develop resistance to fluconazole, particularly when patients are receiving long-term therapy 106 . Vaginitis caused by C. tropicalis and C. guilliermondii should be treated like a conventional C. albicans vaginitis. C. kefyr is apathogenic and therefore unlikely to be the cause of vaginitis.
8.5 Therapy of chronic recurrent Candida vaginitis
Therapy of acute VVC takes 1 – 7 days and consists of the short-term administration of a typical active agent or the administration of a single dose, with cure rates reported to be more than 80%. However, this does not apply to chronic RVVC. As infection equals colonization plus disposition and therapies against disposition have not yet been tested, topical or oral maintenance therapies (suppressive therapies) are recommended for chronic RVVC to prevent relapse 107 , 108 , 109 , 110 , 111 .
The results of therapies with 500 mg topical clotrimazole, 100 mg oral ketoconazole or 150 mg oral fluconazole are comparable, but it should be noted that ketoconazole is no longer available. In a randomized placebo-controlled study of 387 women treated with 150 mg fluconazole once a week for 6 months, 42.9% of patients who received fluconazole and 21.9% of patients who received placebo were disease-free after 12 months 110 . Topical nystatin appears to be similarly effective to treat chronic RVVC, particularly non- Candida albicans and fluconazole-resistant strains 102 .
For cases of chronic RVVC, Donders et al. 68 , 112 recommend an initial dose of 200 mg fluconazole on 3 days in the first week, followed by a maintenance regimen once the patient is symptom-free or fungi can no longer be detected, consisting of a single dose of 200 mg fluconazole per month for a period of one year ( Fig. 1 ). With this regimen, about 90% were disease-free after 6 months and 77% after one year 68 , 112 . Women with familial atopy, longer duration of symptoms, or severe vaginal abrasion have a higher risk of not responding to fluconazole maintenance therapy 113 . Fluconazole suppressive therapy appears to be highly effective in preventing VVC symptoms but it is rarely curative 114 . Relapse often occurs after maintenance therapy is discontinued.
Fig. 1.

Maintenance therapy with fluconazole in patients with chronic recurrent vulvovaginal candidosis.
Sexual behavior does not appear to be a risk factor for non-response to fluconazole maintenance therapy in patients with chronic RVVC 115 . Asymptomatic sexual partners of patients who suffer from chronic RVVC do not require treatment to reduce the recurrence rates of these women 115 . If a patientʼs partner experiences symptoms or yeast is detected on his penis or in his sperm, a single dose of 150 mg fluconazole may be indicated for the partner. For women with an intrauterine pessary who suffer from chronic RVVC, removal of the intrauterine device should be considered, as affected women receiving maintenance therapy only became recurrence-free after the intrauterine pessary was removed.
8.6 Therapy during pregnancy
Several retrospective studies 116 , 117 , 118 , 119 and a prospective randomized study 120 have reported a significant reduction in preterm births after vaginal treatment with clotrimazole in women who had VVC in the first trimester of pregnancy. An Australian study with a relatively small number of cases reported a tendency to a lower preterm birth rate following treatment with clotrimazole in the first trimester of pregnancy 121 . Another retrospective study reported an increased preterm birth rate in women with recurrent asymptomatic Candida colonization in early pregnancy 122 .
Almost all healthy neonates born at term who are colonized with C. albicans from the maternal vagina during vaginal birth develop oral thrush and/or diaper dermititis in the first year of life, with the incidence peaking in the 2nd–4th week of life 123 , 124 . Topical treatment over 6 – 7 days in the last few weeks of pregnancy of pregnant women with Candida colonization is therefore recommended to prevent colonization and subsequent infection of neonates during vaginal birth.
The administration of fluconazole in typical gynecological dosages of 150 – 300 mg/day was long considered harmless during pregnancy, although it was not approved for use in pregnant women. Low doses of ≤ 150 mg do not appear to be associated with an embryopathic risk 125 . However, an increased incidence of fetal tetralogy of Fallot has been reported following a cumulative dose of 150 – 6000 mg fluconazole in the first trimester of pregnancy 126 . The same working group reported an increased risk of miscarriage after oral fluconazole therapy in early pregnancy 127 . Dequalinium chloride can be an alternative treatment option 128 , 129 , 130 .
8.7 Self-medication
More than 80% of cases self-medicate with OTC (over-the-counter) drugs, usually clotrimazole or fluconazole, to treat VVC 38 , 131 . According to one study, however, only one third of women who self-medicated with vaginal antifungal agents actually suffered from VVC 132 . Patients should therefore only be treated for VVC after receiving a correct, medically confirmed diagnosis to prevent the development of resistance and side effects.
8.8 Importance of probiotics
Because of the antagonistic effect of certain Lactobacillus strains against Candida -related vulvovaginitis, probiotics are viewed as a natural approach for the prophylaxis and treatment of infections. Extragenital locations such as the bowel serve as reservoirs for recolonization in women with chronic RVVC 133 , meaning that it could be useful to consider administering oral probiotics to women with chronic RVVC as well as to women for whom antifungal agents are contraindicated 134 , 135 . Probiotics may be an effective prophylactic strategy against VVC, for example, to prevent Candida glabrata vaginitis 136 . Probiotics may also be directly effective; as fungicides, they inhibit the growth of Candida and limit adhesion to epithelial cells 137 .
8.9 Alternative and complementary medicine
Boric acid exhibits antibacterial, antifungal and antiviral activity as well as having antiseptic and astringent properties. It is applied in the form of topical powder and helps to curb the growth of Candida spp. It alleviates itching and inflammation and expedites healing. Its application should be limited to off-label use in exceptional cases. Povidone-iodine (PVP-I) has a germicidal effect against bacteria, fungi and viruses, as it inhibits biofilm develop. The administration of PVP-I therefore usually results in a relatively rapid alleviation of VVC symptoms 134 . Propolis has also been described as a promising alternative for the treatment of VVC. It has antimicrobial, anti-inflammatory, antiseptic, hepatoprotective, antitumoral, immunomodulatory, wound-healing, anesthetic and antioxidative properties 134 , 138 . Salvina officinalis is another alternative therapy option 139 , as is therapy with progestogens 66 , 140 .
9 Outlook
9.1 Immunotherapies
9.2 Future research
Funding
Funding for this guideline was provided by the German Society of Gynecology and Obstetrics (DGGG).
Acknowledgements
The authors would like to thank Valentina Sustr, Monika Nothacker, Simone Bucher, Susanne Blödt, Ulrike Weber and Paul Gaß for their kind support when preparing this guideline.
Danksagung
Die Autoren bedanken sich bei Valentina Sustr, Monika Nothacker, Simone Bucher, Susanne Blödt, Ulrike Weber und Paul Gaß für die freundliche Unterstützung bei der Erstellung dieser Leitlinie.
Footnotes
Conflict of Interest/Interessenkonflikt The conflicts of interest of the authors are listed in the long version of the guideline./Die Interessenkonflikte der Autoren sind in der Langfassung der Leitlinie aufgelistet.
Consensus-based recommendation 1.E1.
Expert consensus
Level of consensus ++
The terms “candidosis” and “ Candida vulvovaginitis” should be used in preference to the term “candidiasis”.
Consensus-based statement 2.S1.
Expert consensus
Level of consensus +++
The most commonly detected fungal organism in premenopausal, pregnant, asymptomatic, healthy women and women with acute VVC (with no history of chronic recurrent VVC) is Candida albicans .
Consensus-based statement 3.S2.
Expert consensus
Level of consensus +++
The step from colonization to vaginitis is still not well understood and confirms the importance of host factors.
Consensus-based statement 4.S3.
Expert consensus
Level of consensus +++
Simple colonization with Candida species is common, often transient, and usually does not require treatment unless it occurs during pregnancy.
Consensus-based recommendation 5.E2.
Expert consensus
Level of consensus +++
Around 70 – 75% of all women will suffer from VVC at least once in their lifetime, although there are some higher risk groups for whom, in addition to appropriate diagnosis and treatment of VVC, the aim should also be to eliminate the predisposing host factor (where possible).
Consensus-based statement 6.S4.
Expert consensus
Level of consensus +++
The main symptom of VVC is itching, although not all women who complain of itching actually have VVC. In addition to itching, affected women often also complain of vaginal redness, soreness, burning, dyspareunia and dysuria. These symptoms by themselves are not sufficient to reliably differentiate between the causes of vaginitis.
Consensus-based recommendation 7.E3.
Expert consensus
Level of consensus +++
The diagnosis of VVC must be based on a combination of clinical examination and microscopic evidence of (pseudo) hyphae, although in unclear cases, diagnostic procedures should be expanded to include culture tests.
Consensus-based recommendation 7.E4.
Expert consensus
Level of consensus +++
The first diagnostic step must consist of microscopic examination of the discharge using a saline solution and 400 × magnification.
Consensus-based statement 7.S5.
Expert consensus
Level of consensus +++
Serological tests, particularly tests to determine antibody levels, are not useful for diagnosing VVC.
Consensus-based recommendation 8.E5.
Expert consensus
Level of consensus +++
Acute VVC should be treated either with topical or oral antifungals, according to the individual womanʼs requirements, while the primary therapy for chronic RVVC should be oral therapy, possibly in the form of long-term suppressive therapy.
Consensus-based statement 8.S6.
Expert consensus
Level of consensus +++
The use topical or oral imidazole derivates, polyenes or ciclopiroxolamine to treat acute VVC will result in the same therapeutic success. Treatment of an asymptomatic sexual partner is not indicated in cases with acute VVC.
Consensus-based statement 8.S7.
Expert consensus
Level of consensus +++
All established vaginal and topical antifungals are well tolerated.
Consensus-based recommendation 8.E6.
Expert consensus
Level of consensus +++
Unnecessary antifungal therapies may lead to resistance due to selection of less susceptible strains and must therefore be avoided.
Consensus-based recommendation 8.E7.
Expert consensus
Level of consensus +++
Cases with chronic RVVC and non- Candida albicans vaginitis should be investigated to see whether the reported symptoms point to mycosis and (after assessment for resistance) an alternate antifungal agent should generally be used. This particularly applies when treating infections caused by Candida glabrata .
Consensus-based recommendation 8.E8.
Expert consensus
Level of consensus +++
Long-term antifungal treatment may be carried out to treat chronic RVVC, although the level of evidence for different treatment regimens is low.
Consensus-based recommendation 8.E9.
Expert consensus
Level of consensus +++
During pregnancy, particularly in the first trimester of pregnancy, VVC must be treated with topical clotrimazole to avoid the risk of fetal malformation or early miscarriage.
Consensus-based recommendation 8.E10.
Expert consensus
Level of consensus +++
Patients must be treated for VVC after a correct and medically confirmed diagnosis based on patient history, clinical examination, fresh specimens, and culturing, where required.
Consensus-based statement 8.S8.
Expert consensus
Level of consensus +++
Probiotics appear to have a positive prophylactic effect on the prevention of VVC, although the evidence for this is limited.
Consensus-based statement 8.S9.
Expert consensus
Level of consensus +++
There are a number of different therapeutic alternatives for the treatment of VVC, but they are seldom evidence-based.
Consensus-based statement 9.S10.
Expert consensus
Level of consensus +++
To date, there are no approved immunotherapies against Candida vaginitis.
Consensus-based statement 9.S11.
Expert consensus
Level of consensus +++
There is a comprehensive need for preclinical, translational and clinical research into VVC and chronic RVVC.
References/Literatur
- 1.Odds F C, Arai T, Disalvo A F. Nomenclature of fungal diseases: a report and recommendations from a Sub-Committee of the International Society for Human and Animal Mycology (ISHAM) J Med Vet Mycol. 1992;30:1–10. doi: 10.1080/02681219280000021. [DOI] [PubMed] [Google Scholar]
- 2.Loeffler W. Terminology of human mycoses. Nomenclature of mycotic diseases of man. List of accepted German terms translated, arranged and published, together with comments, for the International Society for Human and Animal Mycology (ISHAM) Mykosen. 1983;26:346–384. [PubMed] [Google Scholar]
- 3.Mendling W. 2. Aufl. Berlin, Heidelberg: Springer Verlag; 2006. Vaginose, Vaginitis, Zervizitis und Salpingitis. [Google Scholar]
- 4.Sobel J D. Vulvovaginal candidosis. Lancet. 2007;369:1961–1971. doi: 10.1016/S0140-6736(07)60917-9. [DOI] [PubMed] [Google Scholar]
- 5.Romeo O, Criseo G. Candida africana and its closest relatives. Mycoses. 2011;54:475–486. doi: 10.1111/j.1439-0507.2010.01939.x. [DOI] [PubMed] [Google Scholar]
- 6.Sharma C, Muralidhar S, Xu J. Multilocus sequence typing of Candida africana from patients with vulvovaginal candidiasis in New Delhi, India. Mycoses. 2014;57:544–552. doi: 10.1111/myc.12193. [DOI] [PubMed] [Google Scholar]
- 7.Mendling W, Krauss C, Fladung B. A clinical multicenter study comparing efficacy and tolerability of topical combination therapy with clotrimazole (Canesten, two formats) with oral single dose fluconazole (Diflucan) in vulvovaginal mycoses. Mycoses. 2004;47:136–142. doi: 10.1111/j.1439-0507.2004.00970.x. [DOI] [PubMed] [Google Scholar]
- 8.Mendling W, Niemann D, Tintelnot K. Die vaginale Kolonisation durch Candidaarten unter besonderer Berücksichtigung von Candida dubliniensis. Geburtshilfe Frauenheilkd. 2007;67:1132–1137. [Google Scholar]
- 9.Hettiarachchi N, Ashbee H R, Wilson J D. Prevalence and management of non-albicans vaginal candidiasis. Sex Transm Infect. 2010;86:99–100. doi: 10.1136/sti.2009.040386. [DOI] [PubMed] [Google Scholar]
- 10.Vermitsky J P, Self M J, Chadwick S G. Survey of vaginal-flora Candida species isolates from women of different age groups by use of species-specific PCR detection. J Clin Microbiol. 2008;46:1501–1503. doi: 10.1128/JCM.02485-07. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 11.Goswami R, Dadhwal V, Tejaswi S. Species-specific prevalence of vaginal candidiasis among patients with diabetes mellitus and its relation to their glycaemic status. J Infect. 2000;41:162–166. doi: 10.1053/jinf.2000.0723. [DOI] [PubMed] [Google Scholar]
- 12.Goswami D, Goswami R, Banerjee U. Pattern of Candida species isolated from patients with diabetes mellitus and vulvovaginal candidiasis and their response to single dose oral fluconazole therapy. J Infect. 2006;52:111–117. doi: 10.1016/j.jinf.2005.03.005. [DOI] [PubMed] [Google Scholar]
- 13.de Leon E M, Jacober S J, Sobel J D. Prevalence and risk factors for vaginal Candida colonization in women with type 1 and type 2 diabetes. BMC Infect Dis. 2002;2:1. doi: 10.1186/1471-2334-2-1. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 14.Corsello S, Spinillo A, Osnengo G. An epidemiological survey of vulvovaginal candidiasis in Italy. Eur J Obstet Gynecol Reprod Biol. 2003;110:66–72. doi: 10.1016/s0301-2115(03)00096-4. [DOI] [PubMed] [Google Scholar]
- 15.Paultisch A, Weger W, Ginter-Hanselmayer G. A 5-year (2000–2004) epidemiological survey of Candida and non-Candida yeast sepcies causing vulvovaginal candidiasis in Graz. Austria Mycoses. 2006;49:471–475. doi: 10.1111/j.1439-0507.2006.01284.x. [DOI] [PubMed] [Google Scholar]
- 16.Odds F.Candida and Candidosis 2nd ed.ed.London: Bailliere Tindall (WB Saunders)1988 [Google Scholar]
- 17.Spinillo A, Capuzzo E, Egbe T O. Torulopsis glabrata Vaginitis. Obstet Gynecol. 1995;85:993–998. doi: 10.1016/0029-7844(95)00047-U. [DOI] [PubMed] [Google Scholar]
- 18.Nyirjesy P, Alexander A B, Weitz M V. Vaginal Candida parapsilsosis: Pathogen or bystander? Infect Dis Obstet Gynecol. 2005;13:37–41. doi: 10.1080/10647440400025603. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 19.Singh S, Sobel J D, Bhargava P. Vaginitis due to candida krusei: Epidemiology, Clinical aspects, and therapy. Clin Infect Dis. 2002;35:1066–1070. doi: 10.1086/343826. [DOI] [PubMed] [Google Scholar]
- 20.Mendling W. 2. Aufl. Heidelberg: Springer; 2006. Vaginose, Vaginitis, Zervizitis und Salpingitis. [Google Scholar]
- 21.Sobel J D, Vazquez J, Lynch M. Vaginitis due to Saccharomyces cerevisiae: epidemiology, clinical aspects, and therapy. Clin Infect Dis. 1993;16:93–99. doi: 10.1093/clinids/16.1.93. [DOI] [PubMed] [Google Scholar]
- 22.Fidel P L. Immunity in vaginal candidiasis. Curr Opin Infect Dis. 2005;18:107–111. doi: 10.1097/01.qco.0000160897.74492.a3. [DOI] [PubMed] [Google Scholar]
- 23.Yano J, Peters B M, Noverr M C. Novel Mechanism behind the Immunopathogenesis of Vulvovaginal Candidiasis: “Neutrophil Anergy”. Infect Immun. 2018;86:e00684-17. doi: 10.1128/IAI.00684-17. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 24.Farrell S M, Hawkins D F, Ryder T A. Scanning electron microscope study of Candida albicans invasion of cultured human cervical epithelial cells. Sabouraudia. 1983;21:251–254. [PubMed] [Google Scholar]
- 25.Trumbore D J, Sobel J D. Recurrent vulvovaginal candidiasis: vaginal epithelial cell susceptibility to Candida albicans adherence. Obstet Gynecol. 1986;67:810–812. [PubMed] [Google Scholar]
- 26.Sobel J D, Myers P G, Kaye D. Adherence of Candida albicans to human vaginal and buccal epithelial cells. J Infect Dis. 1981;143:76–82. doi: 10.1093/infdis/143.1.76. [DOI] [PubMed] [Google Scholar]
- 27.De Bernardis F, Agatensi L, Ross I K. Evidence for a role for secreted aspartate proteinase of Candida albicans in vulvovaginal candidiasis. J Infect Dis. 1990;161:1276–1283. doi: 10.1093/infdis/161.6.1276. [DOI] [PubMed] [Google Scholar]
- 28.Naglik J, Albrecht A, Bader O. Candida albicans proteinases and host/pathogen interactions. Cell Microbiol. 2004;6:915–926. doi: 10.1111/j.1462-5822.2004.00439.x. [DOI] [PubMed] [Google Scholar]
- 29.Ruchel R, Tegeler R, Trost M. A comparison of secretory proteinases from different strains of Candida albicans. Sabouraudia. 1982;20:233–244. doi: 10.1080/00362178285380341. [DOI] [PubMed] [Google Scholar]
- 30.Ghannoum M A. Potential role of phospholipases in virulence and fungal pathogenesis. Clin Microbiol Rev. 2000;13:122–143. doi: 10.1128/cmr.13.1.122-143.2000. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 31.Cassone A, De Bernardis F, Mondello F. Evidence for a correlation between proteinase secretion and vulvovaginal candidosis. J Infect Dis. 1987;156:777–783. doi: 10.1093/infdis/156.5.777. [DOI] [PubMed] [Google Scholar]
- 32.Meinhof W. [Hydrochloric acid tolerance of Candida albicans] Mykosen. 1974;17:339–347. [PubMed] [Google Scholar]
- 33.Lattif A A, Prasad R, Banerjee U. The glyoxylate cycle enzyme activities in the pathogenic isolates of Candida albicans obtained from HIV/AIDS, diabetic and burn patients. Mycoses. 2006;49:85–90. doi: 10.1111/j.1439-0507.2006.01192.x. [DOI] [PubMed] [Google Scholar]
- 34.Cunha C, Carvalho A, Esposito A. DAMP signaling in fungal infections and diseases. Front Immunol. 2012;3:286. doi: 10.3389/fimmu.2012.00286. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 35.Zhao X, Malloy P J, Ardies C M. Oestrogen-binding protein in Candida albicans: antibody development and cellular localization by electron immunocytochemistry. Microbiology. 1995;141 (Pt 10):2685–2692. doi: 10.1099/13500872-141-10-2685. [DOI] [PubMed] [Google Scholar]
- 36.Dennerstein G, Ellis D H. Oestrogen, glcogen and vaginal candidiasis. Obstet Gynecol. 2001;41:326. doi: 10.1111/j.1479-828x.2001.tb01238.x. [DOI] [PubMed] [Google Scholar]
- 37.Weissenbacher T, Witkin S S, Ledger W J. Relationship between clinical diagnosis of recurrent vulvovaginal candidiasis and detection of Candida species by culture and polymerase chain reaction. Arch Gynecol Obstet. 2009;279:125–129. doi: 10.1007/s00404-008-0681-9. [DOI] [PubMed] [Google Scholar]
- 38.Beigi R H, Meyn L A, Moore D M. Vaginal yeast colonization in nonpregnant women: a longitudinal study. Obstet Gynecol. 2004;104:926–930. doi: 10.1097/01.AOG.0000140687.51048.73. [DOI] [PubMed] [Google Scholar]
- 39.Mendling W, Gutschmidt J, Gantenberg R. Vergleich der Stammspezifität von Hefepilzen verschiedener Lokalisation bei Frauen mit Vaginalcandidosen. Mycoses. 1998;41:23–25. doi: 10.1111/j.1439-0507.1998.tb00596.x. [DOI] [PubMed] [Google Scholar]
- 40.Ruhnke M, Grosch-Worner I, Lischewski A. Genotypic relatedness of yeast isolates from women infected with human immunodeficiency virus and their children. Mycoses. 1999;42:385–394. doi: 10.1046/j.1439-0507.1999.00479.x. [DOI] [PubMed] [Google Scholar]
- 41.Bohannon N J. Treatment of vulvovaginal candidiasis in patients with diabetes. Diabetes Care. 1998;21:451–456. doi: 10.2337/diacare.21.3.451. [DOI] [PubMed] [Google Scholar]
- 42.Yano J, Sobel J D, Nyirjesy P. Current patient perspectives of vulvovaginal candidiasis: incidence, symptoms, management and post-treatment outcomes. BMC Womens Health. 2019;19:48. doi: 10.1186/s12905-019-0748-8. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 43.Donders G GG, Bellen G, Ruban K. Short- and long-term influence of the levonorgestrel-releasing intrauterine system (Mirena(R)) on vaginal microbiota and Candida. J Med Microbiol. 2018;67:308–313. doi: 10.1099/jmm.0.000657. [DOI] [PubMed] [Google Scholar]
- 44.Denning D W, Kneale M, Sobel J D. Global burden of recurrent vulvovaginal candidiasis: a systematic review. Lancet Infect Dis. 2018;18:e339–e347. doi: 10.1016/S1473-3099(18)30103-8. [DOI] [PubMed] [Google Scholar]
- 45.Unnikrishnan A G, Kalra S, Purandare V. Genital infections with sodium glucose cotransporter-2 inhibitors: Occurrence and management in patients with type 2 diabetes mellitus. Indian J Endocrinol Metab. 2018;22:837–842. doi: 10.4103/ijem.IJEM_159_17. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 46.Nyirjesy P, Sobel J D, Fung A. Genital mycotic infections with canagliflozin, a sodium glucose co-transporter 2 inhibitor, in patients with type 2 diabetes mellitus: a pooled analysis of clinical studies. Curr Med Res Opin. 2014;30:1109–1119. doi: 10.1185/03007995.2014.890925. [DOI] [PubMed] [Google Scholar]
- 47.Willems H ME, Ahmed S S, Liu J. Vulvovaginal Candidiasis: A Current Understanding and Burning Questions. J Fungi (Basel) 2020;6:27. doi: 10.3390/jof6010027. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 48.Eckert L O, Hawes S E, Stevens C E. Vulvovaginal Candidiasis: clinical manifestations, risk factors, management algorithm. Obstet Gynecol. 1998;92:757–765. doi: 10.1016/s0029-7844(98)00264-6. [DOI] [PubMed] [Google Scholar]
- 49.Pirotta M V, Gunn J M, Chondros P. “Not thrush again!” Womenʼs experience of post-antibiotic vulvovaginits. Med J Aust. 2003;179:43–46. doi: 10.5694/j.1326-5377.2003.tb05418.x. [DOI] [PubMed] [Google Scholar]
- 50.Pirotta M V, Garland S M. Genital Candida species detected in samples from women in Melbourne, Australia, before and after treatment with antibiotics. J Clin Microbiol. 2006;44:3213–3217. doi: 10.1128/JCM.00218-06. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 51.Xu J, Schwartz K, Bartoces M. Effect of antibiotics on vulvovaginal candidiasis: a MetroNet study. J Am Board Fam Med. 2008;21:261–268. doi: 10.3122/jabfm.2008.04.070169. [DOI] [PubMed] [Google Scholar]
- 52.Shukla A, Sobel J D. Vulvovaginitis Caused by Candida Species Following Antibiotic Exposure. Curr Infect Dis Rep. 2019;21:44. doi: 10.1007/s11908-019-0700-y. [DOI] [PubMed] [Google Scholar]
- 53.Auger P, Joly J. Microbial flora associated with Candida albicans vulvovaginitis. Obstet Gynecol. 1980;55:397–401. doi: 10.1097/00006250-198003000-00029. [DOI] [PubMed] [Google Scholar]
- 54.Aagaard K, Riehle K, Ma J. A metagenomic approach to characterization of the vaginal microbiome signature in pregnancy. PLoS One. 2012;7:e36466. doi: 10.1371/journal.pone.0036466. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 55.Hummelen R, Macklaim J M, Bisanz J E. Vaginal microbiome and epithelial gene array in post-menopausal women with moderate to severe dryness. PLoS One. 2011;6:e26602. doi: 10.1371/journal.pone.0026602. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 56.De Seta F, Parazzini F, De Leo R. Lactobacillus plantarum P17630 for preventing Candida vaginitis recurrence: a retrospective comparative study. Eur J Obstet Gynecol Reprod Biol. 2014;182:136–139. doi: 10.1016/j.ejogrb.2014.09.018. [DOI] [PubMed] [Google Scholar]
- 57.Mailander-Sanchez D, Wagener J, Schaller M. Potential role of probiotic bacteria in the treatment and prevention of localised candidosis. Mycoses. 2012;55:17–26. doi: 10.1111/j.1439-0507.2010.01967.x. [DOI] [PubMed] [Google Scholar]
- 58.Martinez R C, Seney S L, Summers K L. Effect of Lactobacillus rhamnosus GR-1 and Lactobacillus reuteri RC-14 on the ability of Candida albicans to infect cells and induce inflammation. Microbiol Immunol. 2009;53:487–495. doi: 10.1111/j.1348-0421.2009.00154.x. [DOI] [PubMed] [Google Scholar]
- 59.Pendharkar S, Brandsborg E, Hammarstrom L. Vaginal colonisation by probiotic lactobacilli and clinical outcome in women conventionally treated for bacterial vaginosis and yeast infection. BMC Infect Dis. 2015;15:255. doi: 10.1186/s12879-015-0971-3. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 60.Ismail A M, Abbas A M, Shams A H. The effect of use of vaginal Lactobacillus rhamnosus for prevention of recurrence of vulvovaginal candidiasis: a randomized controlled trial. Thai J Obstet Gynaecol. 2017;25:62–68. [Google Scholar]
- 61.Santos C MA, Pires M CV, Leao T L. Selection of Lactobacillus strains as potential probiotics for vaginitis treatment. Microbiology. 2016;162:1195–1207. doi: 10.1099/mic.0.000302. [DOI] [PubMed] [Google Scholar]
- 62.Dennerstein G J, Ellis D H. Oestrogen, glycogen and vaginal candidiasis. Aust N Z J Obstet Gynaecol. 2001;41:326–328. doi: 10.1111/j.1479-828x.2001.tb01238.x. [DOI] [PubMed] [Google Scholar]
- 63.Naglik J R, Gaffen S L, Hube B. Candidalysin: discovery and function in Candida albicans infections. Curr Opin Microbiol. 2019;52:100–109. doi: 10.1016/j.mib.2019.06.002. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 64.Fischer G, Bradford J. Vulvovaginal candidiasis in postmenopausal women: the role of hormone replacement therapy. J Low Genit Tract Dis. 2011;15:263–267. doi: 10.1097/LGT.0b013e3182241f1a. [DOI] [PubMed] [Google Scholar]
- 65.van de Wijgert J HHM, Verwijs M C, Turner A N. Hormonal contraception decreases bacterial vaginosis but oral contraception may increase candidiasis: implications for HIV transmission. AIDS. 2013;27:2141–2153. doi: 10.1097/QAD.0b013e32836290b6. [DOI] [PubMed] [Google Scholar]
- 66.Spacek J, Kestranek J, Jilek P. Comparison of two long-term gestagen regimens in the management of recurrent vulvovaginal candidiasis: A pilot study. Mycoses. 2017;60:260–265. doi: 10.1111/myc.12593. [DOI] [PubMed] [Google Scholar]
- 67.Babula O, Lazdāne G, Kroica J. Frequency of interleukin-4 (IL-4) − 589 gene polymorphism and vaginal concentrations of IL-4, nitric oxide, and mannose-binding lectin in women with recurrent vulvovaginal candidiasis. Clin Infect Dis. 2005;40:1258–1262. doi: 10.1086/429246. [DOI] [PubMed] [Google Scholar]
- 68.Donders G G, Babula O, Bellen G. Mannose-binding lectin gene polymorphism and resistance to therapy in women with recurrent vulvovaginal candidiasis. BJOG. 2008;115:1225–1231. doi: 10.1111/j.1471-0528.2008.01830.x. [DOI] [PubMed] [Google Scholar]
- 69.Chaim W, Foxman B, Sobel J D. Association of recurrent vaginal candidiasis and secretory ABO and Lewis phenotype. J Infect Dis. 1997;176:828–830. doi: 10.1086/517314. [DOI] [PubMed] [Google Scholar]
- 70.Nyman G SA, Tang M, Inerot A. Contact allergy to beeswax and propolis among patients with cheilitis or facial dermatitis. Contact Dermatitis. 2019;81:110–116. doi: 10.1111/cod.13306. [DOI] [PubMed] [Google Scholar]
- 71.Cassone A, Casadevall A. Recent progress in vaccines against fungal diseases. Curr Opin Microbiol. 2012;15:427–433. doi: 10.1016/j.mib.2012.04.004. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 72.Holland S M, Vinh D C. Yeast infections – Human genetics on the rise. N Engl J Med. 2009;361:1798–1801. doi: 10.1056/NEJMe0907186. [DOI] [PubMed] [Google Scholar]
- 73.de Jong M A, Vriend L E, Theelen B. C-type lectin Langerin is a beta-glucan receptor on human Langerhans cells that recognizes opportunistic and pathogenic fungi. Mol Immunol. 2010;47:1216–1225. doi: 10.1016/j.molimm.2009.12.016. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 74.Romani L. Immunity to fungal infections. Nat Rev Immunol. 2004;4:1–23. doi: 10.1038/nri1255. [DOI] [PubMed] [Google Scholar]
- 75.Vecchiarelli A, Pericolini E, Gabrielli E. New approaches in the development of a vaccine for mucosal candidiasis: progress and challenges. Front Microbiol. 2012;3:294. doi: 10.3389/fmicb.2012.00294. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 76.Neves N A, Carvalho L P, De Oliveira M A. Association between atopy and recurrent vaginal candidiasis. Clin Exp Immunol. 2005;142:167–171. doi: 10.1111/j.1365-2249.2005.02891.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 77.Reed B D, Zazove P, Pierson C L. Candida transmission and sexual behaviors as risks for a repeat episode of Candida vulvovaginits. J Womens Health (Larchmt) 2003;12:979–989. doi: 10.1089/154099903322643901. [DOI] [PubMed] [Google Scholar]
- 78.Rylander E, Berglund A L, Krassny C. Vulvovaginal candida in a young sexually active population: prevalence and association with oro-genital sex and frequent pain at intercourse. Sex Transm Infect. 2004;80:54–57. doi: 10.1136/sti.2003.004192. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 79.Ehrstrom S M, Kornfeld D, Thuresson J. Signs of chronic stress in women with recurrent candida vulvovaginitis. Am J Obstet Gynecol. 2005;193:1376–1381. doi: 10.1016/j.ajog.2005.03.068. [DOI] [PubMed] [Google Scholar]
- 80.Meyer H, Goettlicher S, Mendling W. Stress as a cause of chronic recurrent vulvovaginal candidosis and the effectiveness of the conventional antimycotic therapy. Mycoses. 2006;49:202–209. doi: 10.1111/j.1439-0507.2006.01235.x. [DOI] [PubMed] [Google Scholar]
- 81.Cruickshank R. Acquired Immunity: Bacterial Infections. Mod Trends Immunol. 1963;1:107–129. [PubMed] [Google Scholar]
- 82.Donders G G, Prenen H, Verbeke G. Impaired tolerance for glucose in women with recurrent vaginal candidiasis. Am J Obstet Gynecol. 2002;187:989–993. doi: 10.1067/mob.2002.126285. [DOI] [PubMed] [Google Scholar]
- 83.Eckert L O, Hawes S E, Stevens C E. Vulvovaginal candidiasis: clinical manifestations, risk factors, management algorithm. Obstet Gynecol. 1998;92:757–765. doi: 10.1016/s0029-7844(98)00264-6. [DOI] [PubMed] [Google Scholar]
- 84.Anderson M R, Klink K, Cohrssen A. Evaluation of vaginal complaints. JAMA. 2004;291:1368–1379. doi: 10.1001/jama.291.11.1368. [DOI] [PubMed] [Google Scholar]
- 85.Spacek J, Jilek P, Buchta V. The serum levels of calcium, magnesium, iron and zinc in patients with recurrent vulvovaginal candidosis during attack, remission and in healthy controls. Mycoses. 2005;48:391–395. doi: 10.1111/j.1439-0507.2005.01164.x. [DOI] [PubMed] [Google Scholar]
- 86.Fidel P L, jr., Vazquez J A, Sobel J D. Candida glabrata: Review of epidemiology, pathogenesis, and clincal disease with comparison to C. albicans. Clin Microbiol Rev. 1999;12:80–96. doi: 10.1128/cmr.12.1.80. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 87.Sobel J D. Vulvovaginitis due to Candida glabrata. An emerging problem. Mycoses. 1998;41:18–22. doi: 10.1111/j.1439-0507.1998.tb00594.x. [DOI] [PubMed] [Google Scholar]
- 88.Mendling W. [Torulopsis in gynecology] Geburtshilfe Frauenheilkd. 1984;44:583–586. doi: 10.1055/s-2008-1036308. [DOI] [PubMed] [Google Scholar]
- 89.Savini V, Catavitello C, Manna A. Two cases of vaginitis caused by itraconazole-resistant Saccharomyces cerevisiae and a review of recently published studies. Mycopathologia. 2008;166:47–50. doi: 10.1007/s11046-008-9119-y. [DOI] [PubMed] [Google Scholar]
- 90.Aballéa S, Guelfucci F, Wagner J. Subjective health status and health-related qualitiy of life among women with Recurrent Vulvovaginal Candidosis (RVVC) in Europe and the USA. Health Qual Life Outcomes. 2013;11:169. doi: 10.1186/1477-7525-11-169. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 91.Mylonas I, Bergauer F. Diagnosis of vaginal discharge by wet mount microscopy: a simple and underrated method. Obstet Gynecol Surv. 2011;66:359–368. doi: 10.1097/OGX.0b013e31822bdf31. [DOI] [PubMed] [Google Scholar]
- 92.Müller J, Nold B, Kubitza D. Amsterdam: Oxford Princeton; 1981. Quantitative Untersuchungen über die Döderlein-Flora gesunder sowie mykosekranker Probandinnen unter lokaler Isoconazol-Nitrat-Therapie; pp. 81–93. [Google Scholar]
- 93.Nyirjesy P, Seeney S M, Grody M H. Chronic fungal vaginitis: the value of cultures. Am J Obstet Gynecol. 1995;173 (3 Pt 1):820–823. doi: 10.1016/0002-9378(95)90347-x. [DOI] [PubMed] [Google Scholar]
- 94.Hoffstetter S E, Barr S, LeFevre C. Self-reported yeast symptoms compared with clinical wet mount analysis and vaginal yeast culture in a specialty clinic setting. J Reprod Med. 2008;53:402–406. [PubMed] [Google Scholar]
- 95.Mulhem E, Boyanton B L, Robinson-Dunn B. Performance of the Affirm VP-III using residual vaginal discharge collected from the speculum to characterize vaginitis in symptomatic women. J Low Genit Tract Dis. 2014;18:344–346. doi: 10.1097/LGT.0000000000000025. [DOI] [PubMed] [Google Scholar]
- 96.Bradford L L, Chibucos M C, Ma B. Vaginal Candida spp. genomes from women with vulvovaginal candidiasis. Pathog Dis. 2017;75:ftx061. doi: 10.1093/femspd/ftx061. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 97.Wilson C.Recurrent vulvovaginitis candidiasis; an overview of traditional and alternative therapies Adv Nurse Pract 20051324–29.quiz 30 [PubMed] [Google Scholar]
- 98.Plempel M. [Pharmacokinetics of imidazole-antimycotics] Mykosen. 1980;23:16–27. [PubMed] [Google Scholar]
- 99.Scheklakow N D, Delektorski W W, Golodova O A. [Ultrastructural changes in Candida albicans caused by polyene antibiotics (authorʼs transl)] Mykosen. 1981;24:140–152. [PubMed] [Google Scholar]
- 100.Niewerth M, Kunze D, Seibold M. Ciclopirox olamine treatment affects the expression pattern of Candida albicans genes encoding virulence factors, iron metabolism proteins, and drug resistance factors. Antimicrob Agents Chemother. 2003;47:1805–1817. doi: 10.1128/AAC.47.6.1805-1817.2003. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 101.Ritter W. Chichester: Ellis Horwood; 1988. Pharmacokinetics of Azole Compounds; pp. 397–429. [Google Scholar]
- 102.Fan S, Liu X, Liang Y. Miconazole nitrate vaginal suppository 1,200 mg versus oral fluconazole 150 mg in treating severe vulvovaginal candidiasis. Gynecol Obstet Invest. 2015;80:113–118. doi: 10.1159/000371759. [DOI] [PubMed] [Google Scholar]
- 103.Mendling W. Chichester: Ellis Horwood; 1988. Azoles in the Therapy of vaginal Candidosis; pp. 480–506. [Google Scholar]
- 104.Wajnberg M, Wajnberg A. [A comparative double blind trial with vaginal creams of cyclopyroxolamine and miconazole in vulvovaginal candidosis (authorʼs transl)] Mykosen. 1981;24:721–730. [PubMed] [Google Scholar]
- 105.das Neves J, Pinto E, Teixeira B. Local treatment of vulvovaginal candidosis: general and practical considerations. Drugs. 2008;68:1787–1802. doi: 10.2165/00003495-200868130-00002. [DOI] [PubMed] [Google Scholar]
- 106.Moran G P, Sanglard D, Donnelly S M. Identification and expression of multidrug transporters responsible for fluconazole resistance in Candida dubliniensis. Antimicrob Agents Chemother. 1998;42:1819–1830. doi: 10.1128/aac.42.7.1819. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 107.Sobel J D. Management of recurrent vulvovaginal candidiasis with intermittent ketokonazole prophylaxis. Obstet Gynecol. 1985;65:435–440. [PubMed] [Google Scholar]
- 108.Davidson F, Mould R F. Recurrent genital candidosis in women and the effect of intermittent prophylactic treatment. Br J Vener Dis. 1978;54:176–183. doi: 10.1136/sti.54.3.176. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 109.Roth A C, Milsom I, Forssman L. Intermittent prophylactic treatment of recurrent vaginal candidiasis by postmenstrual application of a 500 mg clotrimazole vaginal tablet. Genitourin Med. 1990;66:357–360. doi: 10.1136/sti.66.5.357. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 110.Sobel J D, Wiesenfeld H, Martens M. Maintenance fluconazole therapy for recurrent vulvovaginal candidiasis. N Engl J Med. 2004;35:875–883. doi: 10.1056/NEJMoa033114. [DOI] [PubMed] [Google Scholar]
- 111.Sobel J D. Recurrent vulvovaginal candidiasis. Am J Obstet Gynecol. 2016;214:15–21. doi: 10.1016/j.ajog.2015.06.067. [DOI] [PubMed] [Google Scholar]
- 112.Donders G, Bellen G, Byttebier G. Individualized decreasing-dose maintenance fluconazole regimen for recurrent vulvovaginal candidiasis (ReCiDiF trial) Am J Obstet Gynecol. 2008;199:6130–6.13E11. doi: 10.1016/j.ajog.2008.06.029. [DOI] [PubMed] [Google Scholar]
- 113.Donders G GG, Grinceviciene S, Bellen G. Is non-response to fluconazole maintenance therapy for recurrent Candida vaginitis related to sensitization to atopic reactions? Am J Reprod Immunol. 2018;79:e12811. doi: 10.1111/aji.12811. [DOI] [PubMed] [Google Scholar]
- 114.Ho J, Wickramasinghe D N, Nikou S-A. Candidalysin Is a Potent Trigger of Alarmin and Antimicrobial Peptide Release in Epithelial Cells. Cells. 2020;9:699. doi: 10.3390/cells9030699. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 115.Grinceviciene S, Ruban K, Bellen G. Sexual behaviour and extra-genital colonisation in women treated for recurrent Candida vulvo-vaginitis. Mycoses. 2018;61:857–860. doi: 10.1111/myc.12825. [DOI] [PubMed] [Google Scholar]
- 116.Czeizel A E, Tóth M, Rockenbauer M. No teratogenic effect after clotrimazole therapy during pregnancy. Epidemiology. 1999;10:437–440. doi: 10.1097/00001648-199907000-00013. [DOI] [PubMed] [Google Scholar]
- 117.Czeizel A E, Fladung B, Vargha P. Preterm birth reduction after clotrimazole treatment during pregnancy. Eur J Obstet Gynecol Reprod Biol. 2004;116:157–163. doi: 10.1016/j.ejogrb.2004.02.011. [DOI] [PubMed] [Google Scholar]
- 118.Czeizel A E, Puhó E H, Kazy Z. The use of data set of the Hungarian case-control surveillance of congenital abnormalities for evaluation of birth outcomes beyond birth defects. Cent Eur J Public Health. 2007;15:147–153. doi: 10.21101/cejph.a3440. [DOI] [PubMed] [Google Scholar]
- 119.Hay P, Czeizel A E. Asymptomatic trichomonas and candida colonization and pregnancy outcome. Best Pract Res Clin Obstet Gynaecol. 2007;21:403–409. doi: 10.1016/j.bpobgyn.2007.02.002. [DOI] [PubMed] [Google Scholar]
- 120.Kiss H, Petricevic L, Husslein P. Prospective randomised controlled trial of an infection screening programme to reduce the rate of preterm delivery. BMJ. 2004 doi: 10.1136/bmj.3869.519653.EB. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 121.Roberts C L, Rickard K, Kotsiou G. Treatment of asymptomatic vaginal candidiasis in pregnancy to prevent preterm birth: an open-label pilot randomized controlled trial. BMC Pregnancy Childbirth. 2011;11:18. doi: 10.1186/1471-2393-11-18. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 122.Farr A, Kiss H, Holzer I. Effect of asymptomatic vaginal colonization with Candida albicans on pregnancy outcome. Acta Obstet Gynecol Scand. 2015;94:989–996. doi: 10.1111/aogs.12697. [DOI] [PubMed] [Google Scholar]
- 123.Blaschke-Hellmessen R. Subpartale Übertragung von Candida und ihre Konsequenzen. Mycoses. 1998;41:31–36. doi: 10.1111/j.1439-0507.1998.tb00598.x. [DOI] [PubMed] [Google Scholar]
- 124.Blaschke-Hellmessen R. [Epidemiological studies of the occurrence of yeasts in children and their mothers] Mykosen. 1968;11:611–616. [PubMed] [Google Scholar]
- 125.Howley M M. Using meta-analyses to improve risk estimates of specific birth defects. BJOG. 2019;126:1553. doi: 10.1111/1471-0528.15950. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 126.Molgaard-Nielsen D, Pasternak B, Hviid A. Use of oral fluconazole during pregnancy and the risk of birth defects. N Engl J Med. 2013;369:830–839. doi: 10.1056/NEJMoa1301066. [DOI] [PubMed] [Google Scholar]
- 127.Molgaard-Nielsen D, Svanstrom H, Melbye M. Association Between Use of Oral Fluconazole During Pregnancy and Risk of Spontaneous Abortion and Stillbirth. JAMA. 2016;315:58–67. doi: 10.1001/jama.2015.17844. [DOI] [PubMed] [Google Scholar]
- 128.Della Casa V, Noll H, Gonser S. Antimicrobial activity of dequalinium chloride against leading germs of vaginal infections. Arzneimittel-Forschung. 2002;52:699–705. doi: 10.1055/s-0031-1299954. [DOI] [PubMed] [Google Scholar]
- 129.Frey Tirri B. Antimicrobial topical agents used in the vagina. Curr Probl Dermatol. 2011;40:36–47. doi: 10.1159/000321047. [DOI] [PubMed] [Google Scholar]
- 130.Mendling W, Weissenbacher E R, Gerber S. Use of locally delivered dequalinium chloride in the treatment of vaginal infections: a review. Arch Gynecol Obstet. 2016;293:469–484. doi: 10.1007/s00404-015-3914-8. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 131.Walker P P, Reynolds M T, Ashbee H R. Vaginal yeasts in the era of “over the counter” antifungals. Sex Transm Infect. 2000;76:437–438. doi: 10.1136/sti.76.6.437. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 132.Ferris D G, Nyirjesy P, Sobel J D. Over-the-counter antifungal drug misuse associated with patient-diagnosed vulvovaginal candidiasis. Obstet Gynecol. 2002;99:419–425. doi: 10.1016/s0029-7844(01)01759-8. [DOI] [PubMed] [Google Scholar]
- 133.Mardh P A, Novikova N, Stukalova E. Colonisation of extragenital sites by Candida in women with recurrent vulvovaginal candidosis. BJOG. 2003;110:934–937. [PubMed] [Google Scholar]
- 134.Felix T C, de Brito Röder D VD, Dos Santos Pedroso R. Alternative and complementary therapies for vulvovaginal candidiasis. Folia Microbiol (Praha) 2019;64:133–141. doi: 10.1007/s12223-018-0652-x. [DOI] [PubMed] [Google Scholar]
- 135.Russo R, Superti F, Karadja E. Randomised clinical trial in women with Recurrent Vulvovaginal Candidiasis: Efficacy of probiotics and lactoferrin as maintenance treatment. Mycoses. 2019;62:328–335. doi: 10.1111/myc.12883. [DOI] [PubMed] [Google Scholar]
- 136.Chew S Y, Cheah Y K, Seow H F. Probiotic Lactobacillus rhamnosus GR-1 and Lactobacillus reuteri RC-14 exhibit strong antifungal effects against vulvovaginal candidiasis-causing Candida glabrata isolates. J Appl Microbiol. 2015;118:1180–1190. doi: 10.1111/jam.12772. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 137.Kosgey J C, Jia L, Fang Y. Probiotics as antifungal agents: Experimental confirmation and future prospects. J Microbiol Methods. 2019;162:28–37. doi: 10.1016/j.mimet.2019.05.001. [DOI] [PubMed] [Google Scholar]
- 138.Capoci I R, Bonfim-Mendonça Pde S, Arita G S. Propolis Is an Efficient Fungicide and Inhibitor of Biofilm Production by Vaginal Candida albicans. Evid Based Complement Alternat Med. 2015;2015:287693. doi: 10.1155/2015/287693. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 139.Ahangari F, Farshbaf-Khalili A, Javadzadeh Y. Comparing the effectiveness of Salvia officinalis, clotrimazole and their combination on vulvovaginal candidiasis: A randomized, controlled clinical trial. J Obstet Gynaecol Res. 2019;45:897–907. doi: 10.1111/jog.13918. [DOI] [PubMed] [Google Scholar]
- 140.Huang Y, Merkatz R B, Hillier S L. Effects of a One Year Reusable Contraceptive Vaginal Ring on Vaginal Microflora and the Risk of Vaginal Infection: An Open-Label Prospective Evaluation. PLoS One. 2015;10:e0134460. doi: 10.1371/journal.pone.0134460. [DOI] [PMC free article] [PubMed] [Google Scholar]

