Travel has become a crucial aspect of contemporary life in a connected globe. Millions of individuals cross borders every day, whether for travel, commerce, or humanitarian purposes. Recognizing the significance of travel medicine in preserving our health and advancing global health is crucial as we embrace the excitement of seeing new cultures and environments. This article clarifies the importance of travel medicine and exhorts travelers to put their health and safety first.
The rapid global spread of pathogens such as drug-resistant Mycobacterium tuberculosis, severe acute respiratory syndrome virus, novel influenza virus strains, and others over the past 10 years has presented challenges for the global public health community.[1] Despite this enormous number, there are 200 in-flight medical emergencies (IFMEs) globally per day, one serious in-flight emergency every 10–40,000 passengers, and around 0.35 fatalities per million incoming passengers yearly.[2] With aging and the rising geriatric population, preexisting medical problems account for around 67% of IFMEs.[3] Travelers are good sentinels for the early detection of infectious diseases, yet they also have the potential to spread infectious diseases that first appear in underdeveloped countries. The most effective places to quickly spot new infections and keep tabs on changing patterns in travel-related diseases are specialized travel and tropical medicine clinics.[1,3]
Vaccination or Travel Medicines for Different Continents
On six continents, GeoSentinel locations are specialized travel medicine clinics that gather clinician-based surveillance data on diseases associated with travel. Global health concerns consist of typhoid from South Asia, dengue from the Caribbean, Central America, and SE Asia, and African tick-typhus from Southern Africa, which were identified in a GeoSentinel analysis of nearly 17,000 sickly visitors.[4]
Yellow Fever
Tropical and subtropical regions of South America and Africa are home to yellow fever, a virus spread by mosquitoes. Aedes and Haemagogus mosquitoes are the main carriers of the disease. The disease is identified based on past travel to an endemic region, contact with infected mosquitoes, history of vaccination, symptoms, and test results. There is no permanent treatment, but fluids and vigorous supportive care are necessary in severe instances. Yellow fever can be prevented with a live-attenuated vaccine that is both secure and very effective, i.e. YF 17D vaccination, attenuated live. For 99% of patients, a single dose is effective within 30 days and offers lifetime immunity.[5]
Travel Medicines for Healthy Travelers
Before leaving on a trip, healthy travelers might benefit from taking a few measures and getting advice from travel medical experts, especially if they are going to a place where there are various health hazards. Healthy travelers should make sure their usual immunizations are current and should think about getting additional shots depending on where they are going. Hepatitis A and B, typhoid, tetanus, diphtheria, and influenza vaccines are typical travel vaccines. It may also be advised to get shots for rabies, Japanese encephalitis, or yellow fever, depending on where you are going. Even for travelers who are normally in good health, travel medical specialists are well-equipped to offer advice and recommendations to ensure a safe and healthy vacation.[6]
Travelers who have Chronic Disease
Chronic disease patients are more likely to develop new illnesses or develop complications from current illnesses. While malaria continues to be the most frequent infectious disease, death connected to travel, motor vehicle injuries, and drowning are other significant preventable causes of death in travelers. People are suffering from chronic illnesses for longer periods of time and receiving cutting-edge therapies from numerous health-care professionals, which frequently leads to fragmented health care. Due to the increased accessibility of efficient medications, the recommendation of numerous chronic illnesses’ treatments in guidelines and modifications in patient expectations. Polypharmacy is becoming more and more prevalent. Patients who have several chronic conditions will often have a long number of diagnoses that have been made over many years.[7]
General Travel Medicines
Many people who travel internationally bring medications with them to manage short-term or long-term health issues. Nevertheless, each nation has its own laws governing medications. There is no specified drug development process for travel medicines. Pharmaceuticals that are often prescribed or supplied over the counter in the United States may be unregistered or seen as restricted pharmaceuticals in other nations. Even though regulations differ by nation, breaking local laws might have significant repercussions. Some of the general travel medicines are listed in Table 1.
Table 1.
General travel medicines
| Medicine |
| Analgesic |
| Antihistamine |
| Cold and flu |
| Cough medicine |
| Throat lozenges |
| Motion sickness tablets |
| Diarrhea medicine |
| Antacid |
| Antiseptic solution |
| Band-aids |
| Wound dressing items |
| Insect repellant cream |
| Mild laxative |
| Antifungal or antimicrobial cream |
| Multi-Vitamin tablet |
Regulatory Acceptance Carrying Travel Medicines in Different Continents
It might be difficult for international travelers to carry drugs across borders. An independent treaty agency that operates internationally is the International Narcotics Control Board (INCB). Most nations have legislation that is based on a list of INCB guidelines that specify which pharmaceuticals and in what amounts may be imported. In Table 2, the availability of official country-specific information for travelers-carrying drugs is shown.[8,9]
Table 2.
Carrying drugs in different nations approved by International Narcotics Control Board
| Country | Standard INCB template in use | Adherence to INCB-recommended maximum import quantities | Valid medical prescription required | Certificate endorsed by health authorities of the country of residence | Certificate issued by health authorities of the destination country | Presentation of original prescription at customs of the destination country | Government website available | Information available in English | Number of prohibited substances listed |
|---|---|---|---|---|---|---|---|---|---|
| Europe | |||||||||
| France | ✔ | ✔ | ✔ | ✔ | 107 | ||||
| Spain | ✔ | ✔ | ✔ | ✔ | Unworkable | Unworkable | |||
| Italy | ✔ | ✔ | ✔ | ✔ | Unworkable | ||||
| Turkey | ✔ | ✔ | ✔ | Unworkable | |||||
| Germany | ✔ | ✔ | ✔ | ✔ | 186 | ||||
| Asia | |||||||||
| China | ✔ | Unworkable | Unworkable | Unworkable | Unworkable | Unworkable | Unworkable | 3 | |
| Thailand | ✔ | ✔ | ✔ | ✔* | ✔* | ✔− | ✔ | 118 | |
| Japan | ✔ | ✔- | ✔* | ✔ | ✔ | 7 | |||
| Malaysia | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | 7 |
| Hong Kong | ✔ | ✔ | ✔ | ✔ | 184 | ||||
| Americas | |||||||||
| USA | ✔ | ✔ | ✔ | ✔ | ✔ | 245 | |||
| Mexico | ✔ | ✔ | ✔ | ✔ | 22 | ||||
| Canada | ✔ | ✔ | ✔ | ✔ | 1547 | ||||
| Argentina | ✔ | ✔ | ✔ | ✔ | 2 | ||||
| Brazil | ✔ | ✔ | ✔ | ✔ | Unworkable | ||||
| Africa | |||||||||
| Egypt | Unworkable | Unworkable | Unworkable | Unworkable | Unworkable | Unworkable | Unworkable | Unworkable | |
| Morocco | ✔ | ✔ | ✔ | ✔ | Unworkable | Unworkable | |||
| South Africa | ✔ | ✔ | ✔ | ✔ | ✔ | Unworkable | 5 | ||
| Tunisia | ✔ | ✔ | ✔ | Unworkable | Unworkable | ||||
| Algeria | ✔ | ✔ | ✔ | ✔ | ✔ | Unworkable | Unworkable | ||
| Oceania | |||||||||
| Australia | Unworkable | Unworkable | Unworkable | Unworkable | Unworkable | ✔ | ✔ | 130 | |
| New Zealand | ✔ | ✔ | ✔ | ✔ | 253 | ||||
| Fiji | Unworkable | Unworkable | Unworkable | Unworkable | Unworkable | ✔ | ✔ | 7 | |
| Papua New Guinea | Unworkable | Unworkable | Unworkable | Unworkable | Unworkable | ✔ | ✔ | 5 | |
| Samoa | Unworkable | Unworkable | Unworkable | Unworkable | Unworkable | Unworkable | Unworkable | 253+ |
*Narcotics, − Psychotropics, and +New Zealand data is not regularly updated. INCB=International Narcotics Control Board, NA=Unworkable
International Society for Travel Medicine: An Association Across the Globe
To fulfill the educational needs of both the public and specialists, the International Society of Travel Medicine (ISTM) was founded in 1991. >4000 people worldwide are members of ISTM. ISTM is a thriving, diverse, multinational association dedicated to making continuous, sustained contributions to the global progress of travel medical practice and knowledge. The ISTM promotes and facilitates teaching, service, and research initiatives in the field of travel medicine in collaboration with health-care professionals, academic institutions, the travel industry, and the media.[10,11]
Travel Medicine for the Ocean
The health and safety of people who participate in activities that include underwater environments is the focus of the specialized discipline of medicine known as underwater travel medicine, commonly referred to as underwater or hyperbaric medicine. These activities include scuba diving, commercial diving, submarine operations, and even undersea building. It is advised that travelers schedule a pretrip consultation at a hospital whose staff members are appropriately knowledgeable and skilled in hyperbaric, tropical, and travel medicine.[12] Antimalarial medications are unknown to be safe and effective for travelers in a hyperbaric setting.[13] This field includes the medical issues related to these activities.
These are some essential components of travel medicine for the ocean as shown in Table 3.
Table 3.
Essential components of travel medicine for the ocean
| Essential components |
| Pressure effects |
| DCS |
| HBOT |
| Oxygen toxicity |
| Barotrauma |
| Medical assessments |
| Diving regulations |
| Emergency response |
| Diving and pregnancy |
DCS=Decompression sickness, HBOT=Hyperbaric oxygen therapy
Travel Medicines for Sports Person
Sportspeople who travel for contests or training need to take special safety measures and pay attention to performance-enhancing factors to keep themselves healthy.[14] From a medical standpoint, more people attending these kinds of sports events raise the possibility of significant casualties. The medical staff providing coverage for the sporting event has to be equipped to handle any kind of emergency.[14,15] Crucial decisions are important regarding the nation or region you will be visiting [Table 4].
Table 4.
Crucial decisions for athletes to carry medical kit
| Crucial decisions |
| Government guidelines govern the entry of goods and medications that you are allowed to take in your bag across borders |
| Requirements for vaccinations before entering the host nation in order to guarantee that the team and other visitors are suitable candidates for entry |
| A nearby supplier of medications and disposables makes it possible to top off depleted stock |
Travel Medicines for who Travel to High Attitude
A common leisure activity that carries a risk of high-altitude disease is traveling to elevations exceeding 2500 m. Up to 75% of hikers who attempt to ascend Tanzania’s Mount Kilimanjaro (5895 m) are afflicted with acute mountain sickness (AMS). General practitioners ought to be qualified to offer helpful guidance on avoiding high-altitude sickness.[16] Due to pressed schedules, travelers—especially those traveling in organized groups—might not leave enough time for acclimatization, and in certain situations, chemoprophylaxis—which speeds up the body’s response to hypobaric hypoxia—might be necessary.[17]
Safety Guidelines for Disease and Vaccination While Traveling
Primary care doctors must evaluate the risk of travel and ensure that potential travelers are properly prepared for their excursions. It is advised to provide the proper vaccinations and to prepare an emergency pack. A posttrip follow-up procedure should be created, and the patient should be informed about safe travel practices.[18] According to a 2008 study on the prevalence of health issues, while traveling to underdeveloped nations, traveler’s diarrhea affects 20%–60% of all visitors.[18,19] To evaluate and reduce travel-related hazards, consultations with immunocompromised individuals should start many months before departure. Improved pretravel counseling and treatments come from a systematic strategy that takes into consideration each patient’s particular immunocompromised status.[20]
The General Protocol to Follow While Assessing the Travelers is as Follows
Examine the health of the traveler
Identify the illness exposure risk
Administer vaccinations and pertinent counseling
Medical care
Counseling food and water.
Mobile Health Applications for Travel
The regulatory bodies ought to examine the ethical concerns surrounding travel-related mobile health applications, pinpoint significant ethical gaps, and make recommendations for crucial ethical issues that should be addressed in upcoming travel-related apps.[20,21] Utilizing mobile health applications on a smartphone is one strategy that has proven advantage due to improvements in the caliber of mobile health technology and the widespread use of smartphones, which permit real-time data gathering, monitoring traveler health behavior as well as faced dangers, has grown simpler and more reliable. Despite its many benefits, such as having access to real-time data, mobile applications for travel medicine have certain ethical issues, such as worries about security and privacy.[22] Travel medicine will change with the arrival of mobile health and medical applications.
Future Prospects of Travel Medicine in Terms of the Pandemic
A number of variables, such as improvements in medical research, modifications in travel habits, and the worldwide reaction to infectious diseases, are expected to have an impact on the future of travel medicine in light of the pandemic. Potential trends and developments include the following
Passports for vaccinations and health certificates
A more thorough pretrip health screening
Emphasis on virtual consultations and telemedicine
Quick diagnostic equipment
New vaccine development and research
Early warning and public health surveillance systems.
Conclusion
Travel medicine is a crucial component of modern travel. To be able to explore the world with confidence and come home with priceless memories, it is essential to take a proactive approach to travel medicine, which includes immunization, illness prevention, and managing preexisting medical concerns. Adopting travel medicine helps to protect our health as well as the worldwide effort to promote health and stop the spread of infectious illnesses.
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