Table 6.
Detailed results of microorganisms that were either misidentified or could not be identified by at least one MALDI-TOF system or phenotypic identification.
| Correct ID | Number of isolates | On-site phenotypic identification | Secondary phenotypic identification or molecular identification∗ (16S or ITS1/2 sequencing) | VITEK | Bruker |
|---|---|---|---|---|---|
| Nonfermentatives | |||||
| Achromobacter xylosoxidans | 1 | Achromobacter denitrificans | ∗ Achromobacter xylosoxidans | Achromobacter denitrificans/xylosoxidans | Achromobacter xylosoxidans |
| Acinetobacter baumannii | 1 | Cedecea lapegei | Acinetobacter baumannii | Acinetobacter baumannii complex | Acinetobacter baumannii |
| Acinetobacter baumannii | 1 | Escherichia coli | Acinetobacter baumannii complex | Acinetobacter baumannii complex | Acinetobacter baumannii |
| Acinetobacter baumannii | 1 | Klebsiella pneumoniae | Acinetobacter baumannii | Acinetobacter baumannii complex | Acinetobacter baumannii |
| Acinetobacter baumannii | 1 | Pseudomonas aeruginosa | Acinetobacter baumannii | Acinetobacter baumannii complex | Acinetobacter baumannii |
| Acinetobacter baumannii | 1 | Staphylococcus hominis | Acinetobacter baumannii complex | Acinetobacter baumannii complex | Acinetobacter baumannii |
| Acinetobacter baumannii | 2 | Acinetobacter baumannii | Acinetobacter baumannii | No identification | Acinetobacter baumannii |
| Acinetobacter baumannii | 2 | Acinetobacter baumannii | Acinetobacter baumannii | Acinetobacter baumannii complex | No identification |
| Acinetobacter guillouiae | 1 | Acinetobacter lwoffii | ∗ Acinetobacter guillouiae | Acinetobacter baumannii complex | Acinetobacter guillouiae |
| Acinetobacter johnsonii | 1 | Acinetobacter lwoffii | ∗ Acinetobacter johnsonii | Acinetobacter johnsonii | Acinetobacter johnsonii |
| Acinetobacter radioresistens | 1 | Acinetobacter lwoffii | ∗ Acinetobacter radioresistens | Acinetobacter radioresistens | Acinetobacter radioresistens |
| Aeromonas hydrophila | 1 | Aeromonas sobria | ∗ Aeromonas hydrophila | Aeromonas hydrophila/caviae | Aeromonas hydrophila |
| Aeromonas hydrophila | 1 | Aeromonas hydrophila/caviae | Aeromonas hydrophila | Aeromonas hydrophila/caviae | Aeromonas caviae |
| Aeromonas sobria | 1 | Aeromonas sobria | ∗ Aeromonas sobria | Aeromonas hydrophila/caviae, sobria | No identification |
| Alcaligenes faecalis | 1 | Chromobacterium violaceum | ∗ Alcaligenes faecalis | Alcaligenes faecalis | Alcaligenes faecalis |
| Burkholderia cepacia | 2 | Burkholderia cepacia | ∗ Burkholderia cepacia | Burkholderia cepacia/vietnamiensis | Burkholderia cenocepacia |
| Comamonas aquatica | 1 | Comamonas testosteroni | ∗ Comamonas aquatic | Delftia acidovorans | Comamonas aquatica |
| Delftia acidovorans | 1 | No identification | Delftia acidovorans | D. acidovorans | D. acidovorans |
| Delftia acidovorans | 1 | No identification | Delftia acidovorans | Delftia acidovorans | Delftia acidovorans |
| Pseudomonas aeruginosa | 3 | Acinetobacter baumannii | Pseudomonas aeruginosa | Pseudomonas aeruginosa | Pseudomonas aeruginosa |
| Pseudomonas aeruginosa | 1 | Enterobacter aerogenes | Pseudomonas aeruginosa | Pseudomonas aeruginosa | Pseudomonas aeruginosa |
| Pseudomonas aeruginosa | 1 | Pseudomonas aeruginosa | Pseudomonas aeruginosa | Porphyromonas gingivalis | Pseudomonas aeruginosa |
| Stenotrophomonas maltophilia | 1 | Pseudomonas aeruginosa | Stenotrophomonas maltophilia | Stenotrophomonas maltophilia | Stenotrophomonas maltophilia |
|
| |||||
| Enterobacteriaceae | |||||
| Chryseobacterium indologenes | 1 | No identification | Chryseobacterium indologenes | Chryseobacterium indologenes | Chryseobacterium indologenes |
| Citrobacter braakii | 1 | Citrobacter freundii | ∗ Citrobacter braakii | Citrobacter braakii/farmeri/freundii | Citrobacter braakii |
| Citrobacter freundii | 1 | No identification | Citrobacter freundii | Citrobacter freundii | Citrobacter freundii |
| Citrobacter sedlakii | 1 | Citrobacter amalonaticus | ∗ Citrobacter sedlakii | Citrobacter sedlakii | Citrobacter sedlakii |
| Citrobacter youngae | 1 | No identification | Citrobacter youngae | Citrobacter freundii/youngae | Citrobacter youngae |
| Citrobacter youngae | 1 | Citrobacter youngae | ∗ Citrobacter youngae | Citrobacter freundii/youngae | Citrobacter freundii |
| Enterobacter asburiae | 1 | Escherichia coli | Enterobacter cloacae complex | Enterobacter cloacae/asburiae | Enterobacter asburiae |
| Enterobacter asburiae | 1 | Enterobacter cloacae complex | ∗ Enterobacter asburiae | Enterobacter cloacae/asburiae | Enterobacter cloacae |
| Enterobacter cancerogenous | 1 | Enterobacter aerogenes | Enterobacter cancerogenous | Enterobacter cancerogenous | Enterobacter cancerogenous |
| Enterobacter cloacae | 1 | Enterobacter cancerogenus | Enterobacter cloacae complex | Enterobacter cloacae/asburiae | Enterobacter cloacae |
| Enterobacter cloacae | 1 | No identification | Enterobacter cloacae complex | Enterobacter cloacae/asburiae | Enterobacter cloacae |
| Enterobacter cloacae | 1 | No identification | Enterobacter cloacae | Enterobacter cloacae/asburiae | Enterobacter cloacae |
| Enterobacter cloacae | 1 | Enterobacter cloacae | ∗ Enterobacter cloacae | Enterobacter cloacae/asburiae | Enterobacter asburiae |
| Enterobacter cloacae | 1 | Enterobacter cloacae | Enterobacter cloacae | Enterobacter cloacae/asburiae | Enterobacter asburiae |
| Enterobacter cloacae | 1 | No identification | Enterobacter cloacae | Enterobacter cloacae/asburiae | Enterobacter cloacae |
| Klebsiella oxytoca | 1 | Escherichia coli | Klebsiella oxytoca | Klebsiella oxytoca | Klebsiella oxytoca |
| Klebsiella pneumoniae | 1 | Acinetobacter baumannii | Klebsiella pneumonia | Klebsiella pneumoniae | Klebsiella pneumoniae |
| Klebsiella pneumoniae | 1 | Enterobacter aerogenes | Klebsiella pneumonia | Klebsiella pneumoniae | Klebsiella pneumoniae |
| Klebsiella pneumoniae | 1 | Enterobacter aerogenes | ∗ Klebsiella pneumoniae | Klebsiella pneumoniae | Klebsiella pneumoniae |
| Klebsiella pneumoniae | 1 | Escherichia coli | Klebsiella pneumonia | Klebsiella pneumoniae | Klebsiella pneumoniae |
| Kluyvera cryocrescens | 1 | Raoultella planticola | ∗ Kluyvera cryocrescens | No identification | No identification |
| Proteus mirabilis | 1 | Stenotrophomonas maltophilia | Proteus mirabilis | Proteus mirabilis | Proteus mirabilis |
| Raoultella ornithinolytica | 1 | No identification | ∗ Raoultella ornithinolytica | Raoultella ornithinolytica/planticola | Raoultella ornithinolytica |
| Shigella boydii | 1 | Shigella boydii | Shigella boydii | Escherichia coli | Escherichia coli |
|
| |||||
| Staphylococci | |||||
| Staphylococcus aureus | 1 | Acinetobacter baumannii | Staphylococcus aureus | Staphylococcus aureus | Staphylococcus aureus |
| Staphylococcus hominis | 1 | Acinetobacter baumannii | Staphylococcus hominis | Staphylococcus hominis | Staphylococcus hominis |
| Staphylococcus epidermidis | 1 | Enterococcus faecium | Staphylococcus epidermidis | Staphylococcus epidermidis | Staphylococcus epidermidis |
| Staphylococcus simulans | 1 | Granulicatella elegans | ∗ Staphylococcus simulans | Staphylococcus haemolyticus | Staphylococcus simulans |
| Staphylococcus haemolyticus | 1 | Staphylococcus aureus | Staphylococcus haemolyticus | Staphylococcus haemolyticus | Staphylococcus haemolyticus |
| Staphylococcus pettenkoferi | 1 | Staphylococcus auricularis | ∗ Staphylococcus pettenkoferi | Staphylococcus auricularis/capitis | Staphylococcus pettenkoferi |
| Staphylococcus hominis | 1 | Staphylococcus epidermidis | Staphylococcus hominis | Staphylococcus hominis | Staphylococcus hominis |
| Staphylococcus aureus | 1 | Staphylococcus haemolyticus | Staphylococcus aureus | Staphylococcus aureus | Staphylococcus aureus |
| Staphylococcus capitis | 1 | Staphylococcus haemolyticus | Staphylococcus capitis | Staphylococcus capitis | Staphylococcus capitis |
| Staphylococcus aureus | 1 | Staphylococcus hominis | Staphylococcus aureus | Staphylococcus aureus | Staphylococcus aureus |
| Staphylococcus epidermidis | 1 | Staphylococcus hominis | Staphylococcus epidermidis | Staphylococcus epidermidis | Staphylococcus epidermidis |
| Staphylococcus epidermidis | 1 | Staphylococcus lentus | Staphylococcus epidermidis | Staphylococcus epidermidis | Staphylococcus epidermidis |
| Staphylococcus hominis | 1 | Staphylococcus saprophyticus | Staphylococcus hominis | Staphylococcus hominis | Staphylococcus hominis |
| Staphylococcus hominis | 1 | Staphylococcus warneri | ∗ Staphylococcus hominis | Staphylococcus hominis | Staphylococcus hominis |
| Staphylococcus hominis | 2 | Staphylococcus warneri | ∗ Staphylococcus hominis | Staphylococcus hominis | Staphylococcus hominis |
| Staphylococcus haemolyticus | 1 | Staphylococcus warneri | Staphylococcus haemolyticus | Staphylococcus haemolyticus | Staphylococcus haemolyticus |
| Staphylococcus epidermidis | 1 | Staphylococcus epidermidis | Staphylococcus epidermidis | Staphylococcus epidermidis | Bacillus pumilus |
| Staphylococcus epidermidis | 1 | Staphylococcus epidermidis | Staphylococcus epidermidis | Staphylococcus epidermidis | Dermobacter hominis |
| Staphylococcus aureus | 1 | No identification | Staphylococcus aureus | Staphylococcus aureus | Staphylococcus aureus |
| Staphylococcus lugdunensis | 1 | No identification | Staphylococcus lugdunensis | Staphylococcus lugdunensis | Staphylococcus lugdunensis |
| Staphylococcus epidermidis | 1 | Staphylococcus epidermidis | Staphylococcus epidermidis | Staphylococcus epidermidis | No identification |
|
| |||||
| Streptococci | |||||
| Leuconostoc mesenteroides | 1 | Staphylococcus capitis | ∗ Leuconostoc mesenteroides | No identification | Staphylococcus pettenkoferi |
| Streptococcus agalactiae | 3 | No identification | Streptococcus agalactiae | Streptococcus agalactiae | Streptococcus agalactiae |
| Streptococcus dysgalactiae | 1 | No identification | ∗ Streptococcus dysgalactiae | Streptococcus dysgalactiae | Streptococcus dysgalactiae |
| Streptococcus mitis | 1 | Streptococcus mitis | Streptococcus mitis | Streptococcus parasanguinis/mitis/oralis | Streptococcus pneumoniae |
| Streptococcus salivarius | 1 | Streptococcus lentus | Streptococcus salivarius | Streptococcus salivarius | Streptococcus salivarius |
|
| |||||
| Enterococci & other Gr(+) cocci | |||||
| Enterococcus faecalis | 1 | Escherichia coli | Enterococcus faecalis | Enterococcus faecalis | Enterococcus faecalis |
| Enterococcus faecium | 1 | Enterococcus faecalis | Enterococcus faecium | Enterococcus faecium | Enterococcus faecium |
| Enterococcus faecalis | 2 | Enterococcus faecium | Enterococcus faecalis | Enterococcus faecalis | Enterococcus faecalis |
| Enterococcus gallinarum | 1 | Enterococcus faecium | ∗ Enterococcus gallinarum | Enterococcus gallinarum | Enterococcus gallinarum |
| Enterococcus faecium | 2 | Enterococcus gallinarum | Enterococcus faecium | Enterococcus faecium | Enterococcus faecium |
| Enterococcus faecalis | 1 | Serratia fonticola | Enterococcus faecalis | Enterococcus faecalis | Enterococcus faecalis |
| Enterococcus faecalis | 1 | Staphylococcus hominis | Enterococcus faecalis | Enterococcus faecalis | Enterococcus faecalis |
|
| |||||
| Coryneforms & other Gr(+) bacilli | |||||
| Corynebacterium striatum | 1 | Actinomyces spp. | Corynebacterium striatum | Corynebacterium striatum | Corynebacterium striatum |
| Corynebacterium urealyticum | 1 | Brucella spp. | Corynebacterium urealyticum | Corynebacterium urealyticum | Corynebacterium urealyticum |
| Corynebacterium appendicis | 1 | Corynebacterium jeikeium | ∗ Corynebacterium appendicis | Corynebacterium pseudodiphtericum | Corynebacterium pseudodiphtericum |
| Corynebacterium ureicelerivorans | 1 | Corynebacterium jeikeium | ∗ Corynebacterium ureicelerivorans | Corynebacterium afermentans | Corynebacterium afermentans |
| Corynebacterium mucifaciens | 2 | Corynebacterium jeikeium | ∗ Corynebacterium mucifaciens | No identification | Corynebacterium mucifaciens |
| Corynebacterium ureicelerivorans | 1 | Corynebacterium jeikeium | ∗ Corynebacterium ureicelerivorans | No identification | Corynebacterium coyleae |
| Corynebacterium glaucum | 1 | Corynebacterium jeikeium | ∗ Corynebacterium glaucum | No identification | No identification |
| Corynebacterium mucifaciens | 1 | Clostridium spp. | ∗ Corynebacterium mucifaciens | Rhizobium radiobacter | Corynebacterium mucifaciens |
| Corynebacterium coyleae | 1 |
Dermococcus/Kytococcus/
Micrococcus |
∗ Corynebacterium coyleae | Arthrobacter cumminsii | Corynebacterium coyleae |
| Lactobacillus paracasei | 1 | Pediococcus pentosaceus | ∗ Lactobacillus paracasei | Lactobacillus casei/paracasei | Lactobacillus paracasei |
| Corynebacterium striatum | 1 | Propionibacterium acnes | Corynebacterium striatum | Corynebacterium striatum | Corynebacterium striatum |
| Bacillus simplex | 1 | Sphingomonas paucimobilis | Bacillus simplex | Bacillus simplex | Bacillus simplex |
| Corynebacterium amycolatum | 1 | Bacillus spp. | Corynebacterium amycolatum | Corynebacterium amycolatum/xerosis | Corynebacterium amycolatum |
| Corynebacterium jeikeium | 2 | Bacillus spp. | Corynebacterium jeikeium | Corynebacterium jeikeium | Corynebacterium jeikeium |
| Corynebacterium striatum | 2 | Bacillus spp. | Corynebacterium striatum | Corynebacterium striatum | Corynebacterium striatum |
| Actinomyces naeslundii | 1 | Actinomyces naeslundii | ∗ Actinomyces naeslundii | No identification | Actinomyces spp. |
|
| |||||
| HACEK & other Gr(−) cocci | |||||
| Moraxella catarrhalis | 1 | Arcanobacterium hemoliticum | Moraxella catarrhalis | Moraxella catarrhalis | Moraxella catarrhalis |
| Haemophilus influenzae | 1 | Bacillus spp. | Haemophilus influenzae | Haemophilus influenzae | Haemophilus influenzae |
| Pasteurella multocida | 1 | Bacillus spp. | ∗ Pasteurella multocida | Pasteurella multocida | Pasteurella multocida |
|
| |||||
| Others | |||||
| Bergeyella zoohelcum | 1 | No identification | ∗ Bergeyella zoohelcum | Bergeyella zoohelcum | Bergeyella zoohelcum |
| Wautersiella falsenii | 1 | Weeksella virosa | ∗ Wautersiella falsenii | No identification | No identification |
| Myroides odoratimimus | 1 | Myroides spp. | ∗ Myroides odoratimimus | Myroides odoratimimus | Myroides spp. |
|
| |||||
| Fungi | |||||
| Candida glabrata | 2 | Candida albicans | Candida glabrata | Candida glabrata | Candida glabrata |
| Candida albicans | 1 | Candida famata | Candida albicans | Candida albicans | Candida albicans |
| Candida tropicalis | 1 | Candida famata | Candida tropicalis | Candida tropicalis/glabrata | Candida tropicalis |
| Candida tropicalis | 1 | Candida famata | ∗ Candida tropicalis | Candida tropicalis | Candida tropicalis |
| Candida albicans | 2 | Candida glabrata | Candida albicans | Candida albicans | Candida albicans |
| Candida glabrata | 1 | Candida lusitaniae | Candida glabrata | Candida glabrata | Candida glabrata |
| Candida tropicalis | 2 | Candida parapsilosis | Candida tropicalis | Candida tropicalis | Candida tropicalis |
| Candida glabrata | 1 | Candida rugose | Candida glabrata | Candida glabrata | Candida glabrata |
| Candida kefyr | 1 | Candida sphaerica | Candida kefyr | Candida kefyr | Candida kefyr |
| Candida orthopsilosis | 1 | Candida tropicalis | ∗ Candida orthopsilosis | Candida parapsilosis | Candida orthopsilosis |
| Candida parapsilosis | 2 | Candida spp. | ∗ Candida parapsilosis | Candida parapsilosis | Candida parapsilosis |
| Candida orthopsilosis | 1 | Candida spp. | ∗ Candida orthopsilosis | Candida parapsilosis | Candida orthopsilosis |
| Meyerozyma caribbica | 1 | Candida spp. | ∗ Meyerozyma caribbica | Candida guilliermondii | Candida guilliermondii |
| Candida albicans | 1 | Stephanoascus ciferrii | Candida albicans | Candida albicans | Candida albicans |
| Candida krusei | 1 | No identification | Candida krusei | Candida krusei | Candida krusei |
| Candida albicans | 1 | Candida albicans | Candida albicans | Candida albicans | Candida tropicalis |
| Candida albicans | 1 | Candida albicans | Candida albicans | Candida albicans | Candida glabrata |
| Candida parapsilosis | 1 | Candida parapsilosis | ∗ Candida parapsilosis | Candida parapsilosis | Candida orthopsilosis |
| Aspergillus brasiliensis | 1 | Aspergillus brasiliensis | Aspergillus brasiliensis | No identification | Aspergillus brasiliensis |
∗Molecular identification (16S or ITS1/2 sequencing).