International travel can expose Canadians to infectious diseases that are uncommon in Ontario. Three of the most important are yellow fever, malaria, and typhoid fever. Although these illnesses are frequently discussed together, prevention is different for each one. Yellow fever and typhoid can be prevented with vaccines, while malaria prevention usually involves prescription medication combined with mosquito-bite precautions.
Travellers seeking advice about yellow fever should have their complete itinerary reviewed rather than relying only on the name of the destination country. Risk can vary by province, elevation, season, rural exposure, planned activities, airport connections, and the amount of time spent in each location. A vaccine may be medically recommended even when it is not required for entry, while another country may request proof of vaccination because the traveller arrived from an affected region.
This first country-by-country guide covers frequently visited destinations in South America, Africa, South Asia, and Southeast Asia. Recommendations apply to typical adult travellers, but pregnancy, age, immune status, chronic medical conditions, medication use, and previous vaccination history can substantially change the advice. Canadians should arrange a personalized travel-health assessment preferably six weeks before departure.
Key Takeaways
- Yellow fever vaccination depends on the exact itinerary and entry rules.
- Canada provides yellow fever vaccine only through designated vaccination centres.
- Malaria is not prevented by a routinely available travel vaccine.
- Antimalarial medication may be required before, during, and after travel.
- Typhoid vaccination is particularly important for travel to South Asia.
- Food and water precautions remain necessary after typhoid vaccination.
- Airport connections through yellow-fever-risk countries can affect entry requirements.
- Travellers should carry the original International Certificate of Vaccination or Prophylaxis when required.
Understanding Yellow Fever, Malaria, and Typhoid Prevention
Yellow fever is a potentially serious viral infection transmitted through infected mosquitoes. Vaccination may be recommended for personal protection in parts of Africa and Central or South America. Some governments also require an International Certificate of Vaccination or Prophylaxis as a condition of entry, particularly when a traveller has recently visited or transited through a country where yellow fever transmission occurs.
In Canada, yellow fever vaccine is available only at centres designated by the Public Health Agency of Canada. The international certificate becomes valid 10 days after primary vaccination and is generally valid for the vaccinated person’s lifetime. Travellers should therefore avoid leaving the appointment until the final week before departure, especially when the certificate is an entry requirement rather than only a medical recommendation.
Malaria is a mosquito-transmitted parasitic illness and an example of a vector-borne disease. Prevention may require medication such as atovaquone-proguanil, doxycycline, mefloquine, or another itinerary-appropriate drug. The correct choice depends on regional resistance, pregnancy, age, medical history, potential drug interactions, duration of travel, and anticipated activities. Medication must be taken exactly as prescribed before, during, and after exposure.
Typhoid fever is usually acquired through food or water contaminated with Salmonella Typhi. Canadian guidance states that most travellers visiting South Asia should be offered typhoid vaccination. For destinations outside South Asia, the decision may depend on trip length, rural travel, local sanitation, accommodation, visiting friends or relatives, and the likelihood of consuming food in private homes or less-controlled settings.
No typhoid vaccine provides complete protection. Travellers should continue to drink properly treated or commercially sealed water, avoid unsafe ice, wash their hands, select thoroughly cooked foods, and be cautious with raw produce. Vaccination lowers risk but does not replace safe food and water practices.
Routine Canadian immunizations should also be reviewed before departure. Depending on the destination and traveller, hepatitis A, hepatitis B, measles-mumps-rubella, tetanus-diphtheria-pertussis, polio, influenza, COVID-19, rabies, meningococcal disease, or Japanese encephalitis vaccination may be relevant. Travel planning should therefore extend beyond the three infections highlighted in this guide.
South America: Brazil, Colombia, and Peru
Brazil
Yellow fever vaccination is recommended for travellers nine months and older visiting many Brazilian states, including Amazonas, Acre, São Paulo, Rio de Janeiro, Minas Gerais, Paraná, and the Federal District. It is also recommended for Iguaçu Falls. It is not normally recommended when travel is limited to certain unaffected locations, including Fortaleza and Recife. Brazil does not generally require the certificate for entry.
Malaria risk is concentrated primarily in the Amazon region, including Acre, Amapá, Amazonas, Rondônia, and Roraima. Transmission also occurs in parts of Maranhão, Mato Grosso, and Pará. Prescription prevention may be indicated for these areas, while malaria is not considered a transmission risk in Brasília, Rio de Janeiro, São Paulo, or Iguaçu Falls. Typhoid vaccination is recommended for most travellers, particularly those visiting rural areas.
Colombia
Colombia requires careful itinerary assessment. Yellow fever vaccination is recommended for most travellers aged nine months and older, but it may not be recommended for travel limited to Bogotá, high-altitude regions, San Andrés and Providencia, or certain major cities. Current CDC destination guidance states that proof of vaccination is required for arriving travellers aged one year and older, although travellers should verify this rule before departure.
Malaria transmission occurs in Colombian areas below 1,700 metres, although Bogotá, Cartagena, and Medellín are listed as having no malaria transmission. Preventive medication may therefore be appropriate for low-elevation jungle, coastal, or rural itineraries but unnecessary for some city-only trips. Typhoid vaccination is recommended for most travellers, especially those staying with relatives or visiting smaller communities.
Peru
Peru’s yellow fever recommendation is strongly determined by geography and elevation. Vaccination is advised for many lower-elevation areas east of the Andes, including parts of Amazonas, Loreto, Madre de Dios, Ucayali, Junín, and several neighbouring regions. It is not normally recommended for Lima, Machu Picchu, the Inca Trail, the city of Cusco, or high-altitude areas above 2,300 metres.
Peru does not generally require yellow fever vaccination for entry. Malaria prevention may be considered for Amazonian and other affected low-elevation areas, depending on the route. Typhoid vaccination is recommended for most travellers, particularly those visiting smaller cities, rural communities, or friends and relatives. A Lima-and-Machu-Picchu itinerary may therefore require different prevention from an Amazon-lodge itinerary.
Africa: Ghana, Nigeria, Kenya, and Tanzania
Ghana
Ghana is a high-priority destination for pre-travel assessment. Yellow fever vaccination is generally recommended, and travellers should verify the country’s certificate requirement before departure. Malaria transmission occurs throughout Ghana, with Plasmodium falciparum responsible for most infections. Prescription malaria prevention is recommended for travellers, alongside insect repellent, protective clothing, screened accommodation, and bed-net use when appropriate.
Typhoid vaccination may be considered based on accommodation, duration, food exposure, rural travel, and whether the traveller will stay with friends or relatives. Hepatitis A vaccination and routine immunization review are also important. Travellers should obtain malaria medication in Canada and complete the full course, including doses required after leaving Ghana.
Nigeria
Yellow fever vaccination is recommended for travellers nine months and older visiting Nigeria. Current CDC guidance states that direct travellers from the United States do not require proof, but travellers arriving from countries with yellow fever risk—including certain airport transits—may be required to show a certificate. Canadians should confirm the applicable rule for their complete flight route.
Malaria prevention is an essential part of Nigerian travel planning because transmission risk is widespread. Typhoid vaccination is recommended for most travellers, especially those staying in private homes, visiting smaller cities, or travelling outside major business districts. Food and water precautions remain essential because vaccination cannot prevent every typhoid infection.
Kenya
Yellow fever vaccination is recommended for most travellers aged nine months and older visiting Kenya. It is generally not recommended when travel is limited to Nairobi or certain northeastern and coastal counties, including Mombasa, Kilifi, Kwale, Lamu, and Garissa. Travellers arriving from a country with yellow fever transmission risk may need proof of vaccination from one year of age.
Malaria risk depends on elevation and location. Safari routes, rural areas, coastal destinations, and lower-elevation regions may require prescription prevention, while some high-altitude itineraries may not. Typhoid vaccination should be considered for travellers with meaningful food and water exposure, longer stays, community visits, or rural travel.
Tanzania and Zanzibar
Yellow fever vaccination is generally not recommended solely for travel to Tanzania. However, proof may be required for travellers aged one year and older arriving from a country with yellow fever risk, including some airport transits or layovers lasting more than 12 hours. Flight connections should therefore be reviewed as carefully as the final destination.
Malaria transmission occurs in Tanzanian areas below approximately 1,800 metres, and prescription prevention is recommended for affected itineraries. This can include many safari regions, mainland destinations, and Zanzibar. Typhoid vaccination is recommended for most travellers, particularly those visiting rural communities, eating outside major resorts, or staying with local residents.
South and Southeast Asia: India, Pakistan, Indonesia, and Thailand
India
India has no local yellow fever transmission, so vaccination is not recommended solely because a person is travelling there. However, India may require proof from travellers arriving from designated yellow-fever-risk countries. This is particularly relevant to multi-country itineraries involving Africa or South America and should be checked before travel.
Malaria transmission occurs across much of India, including Mumbai and New Delhi, although many areas above 2,000 metres are considered free of transmission. The need for antimalarial medication depends on the states visited, elevation, season, accommodation, and duration. Typhoid vaccination is recommended for most travellers, including people visiting family or spending time in smaller cities.
Pakistan
Yellow fever does not normally pose a local transmission risk in Pakistan, but proof may be required after travel through a yellow-fever-risk country. Malaria occurs in Pakistan, and prescription prevention may be required depending on region, season, and itinerary. Travellers should obtain a personalized assessment rather than assuming that urban or family accommodation removes malaria risk.
Typhoid vaccination is strongly relevant for Pakistan. Extensively drug-resistant typhoid has been reported, which makes prevention and careful food and water behaviour particularly important. Vaccinated travellers can still become infected, so they should seek prompt assessment for persistent fever, abdominal symptoms, or severe illness during or after travel.
Indonesia
Yellow fever vaccination is not recommended for protection against local transmission in Indonesia. However, travellers aged nine months and older arriving from a yellow-fever-risk country may need a vaccination certificate. This may affect people combining Indonesia with parts of Africa or South America.
Malaria risk varies considerably among Indonesia’s islands and provinces. A stay limited to central Jakarta or resort areas can carry a different risk from travel to rural Papua, East Nusa Tenggara, Kalimantan, or remote islands. Typhoid vaccination is recommended for most travellers, especially those visiting smaller communities, staying with residents, or eating in settings with uncertain sanitation.
Thailand
Yellow fever vaccination is not recommended for local disease prevention in Thailand. Nevertheless, travellers aged nine months and older arriving from a country with yellow fever transmission risk may require proof, including after certain airport transits lasting more than 12 hours.
Malaria risk is concentrated mainly in rural forest and border areas near Myanmar, Cambodia, and Malaysia. Risk is rare or low in Bangkok, Chiang Mai, Chiang Rai, Phuket, Koh Samui, and several other major tourist locations. Prescription prevention may be recommended for high-risk border itineraries, while mosquito precautions alone may be advised elsewhere. Typhoid vaccination is recommended for most travellers.
Before finalizing travel, patients can discuss their itinerary, routine vaccine history, medication needs, and Vaccinations & Immunizations with a qualified healthcare professional. Bring every destination, flight connection, travel date, accommodation type, planned activity, medical condition, allergy, and current medication to the appointment.
Conclusion
Travel-health recommendations cannot be determined from a country name alone. A traveller visiting Lima and Machu Picchu may receive different advice from someone entering the Peruvian Amazon. A business traveller staying in Nairobi may have different yellow fever considerations from a traveller visiting rural western Kenya. Airport connections can also create certificate requirements that would not otherwise apply.
Plan the assessment approximately six weeks before departure. Yellow fever vaccination requires evaluation at a designated Canadian centre, and its international certificate becomes valid 10 days after primary vaccination. Malaria medication must be selected according to itinerary and individual health factors, while typhoid vaccination should always be combined with safe food and water practices.
Because outbreaks, border requirements, vaccine availability, and malaria patterns can change, this guide should be used as a planning resource rather than a substitute for individualized medical advice. Reconfirm official entry requirements shortly before departure and carry original vaccination documentation when required.
Frequently Asked Questions
1. Are yellow fever, malaria, and typhoid all prevented by vaccines?
No. Yellow fever and typhoid vaccines are available, but malaria prevention generally involves prescription antimalarial medication and mosquito-bite precautions.
2. When should I arrange my travel-health appointment?
Canadians should preferably consult a healthcare provider or travel clinic approximately six weeks before departure. Even late travellers should still seek advice because some protection may remain possible.
3. Where can I receive yellow fever vaccine in Canada?
Yellow fever vaccine is available only through vaccination centres designated by the Public Health Agency of Canada.
4. How quickly does the yellow fever certificate become valid?
The International Certificate of Vaccination or Prophylaxis becomes valid 10 days after primary yellow fever vaccination.
5. Is a yellow fever certificate valid for only 10 years?
Generally, no. Under current international rules, the certificate is valid for the vaccinated person’s lifetime, including qualifying certificates issued before 2016.
6. Do I need antimalarial medication for every tropical country?
No. The decision depends on the exact region, elevation, season, duration, accommodation, and personal medical factors. Some countries have malaria only in defined provinces or rural border areas.
7. Can I stop malaria tablets when I leave the destination?
Not necessarily. Many regimens must continue for a specified period after leaving the malaria-risk area. Follow the complete prescription instructions.
8. Does typhoid vaccination mean I can eat and drink anything?
No. Typhoid vaccines are not completely protective. Safe water, hand hygiene, thoroughly cooked food, and careful selection of raw foods remain necessary.
9. Do airport layovers affect yellow fever requirements?
Yes. Some countries treat long airport transits through yellow-fever-risk countries as relevant exposure. The duration and location of every connection should be reviewed.
10. What should I do if I develop a fever after returning?
Seek medical attention promptly and tell the healthcare professional every country you visited. Malaria should be considered in an unexplained fever during travel or for up to one year after returning from a malaria-risk area.
Medical disclaimer: This article is for general educational purposes and does not replace a personalized travel-health assessment. Vaccine recommendations, contraindications, malaria medication choices, and entry requirements depend on the traveller’s health and complete itinerary. Guidance verified July 31, 2026.