Hepatitis A is a disease of the liver spread through contaminated food and water or contact with an infected person. All those travelling to regions with a risk of hepatitis A infection should get vaccinated.

Hepatitis B is a disease of the liver spread through blood or other bodily fluids. Travellers who may be exposed (e.g., through sexual contact, medical treatment, sharing needles, tattooing, acupuncture or occupational exposure) should get vaccinated.

Seasonal influenza occurs worldwide. The flu season usually runs from November to April in the northern hemisphere, between April and October in the southern hemisphere and year round in the tropics. Influenza (flu) is caused by a virus spread from person to person when they cough or sneeze or by touching objects and surfaces that have been contaminated with the virus. Get the flu shot.

Measles is a highly contagious viral disease. It can spread quickly from person to person by direct contact and through droplets in the air.

Anyone who is not protected against measles is at risk of being infected with it when travelling internationally.

Regardless of where you are going, talk to a health care professional before travelling to make sure you are fully protected against measles.

Yellow fever is a disease caused by a flavivirus from the bite of an infected mosquito.

Travellers get vaccinated either because it is required to enter a country or because it is recommended for their protection.

Risk

• There is no risk of yellow fever in this country.

Country Entry Requirement*

• Proof of vaccination is required if you are coming from or have transited through an airport of a country where yellow fever occurs.

Recommendation

• Vaccination is not recommended.
• Discuss travel plans, activities, and destinations with a health care professional.
• There is currently a shortage of the yellow fever vaccine in Canada. It is important for travellers to contact a designated Yellow Fever Vaccination Centre well in advance of their trip to ensure that the vaccine is available.

About Yellow Fever
Yellow Fever Vaccination Centres in Canada
* It is important to note that country entry requirements may not reflect your risk of yellow fever at your destination. It is recommended that you contact the nearest diplomatic or consular office of the destination(s) you will be visiting to verify any additional entry requirements.

• Travellers' diarrhea is the most common illness affecting travellers. It is spread from eating or drinking contaminated food or water.
• Risk of developing travellers' diarrhea increases when travelling in regions with poor standards of hygiene and sanitation. Practise safe food and water precautions.
• The most important treatment for travellers' diarrhea is rehydration (drinking lots of fluids). Carry oral rehydration salts when travelling.

Typhoid is a bacterial infection spread by contaminated food or water. Risk is higher among children, travellers going to rural areas, travellers visiting friends and relatives or those travelling for a long period of time.

Travellers visiting regions with a risk typhoid, especially those exposed to places with poor sanitation should speak to a health care professional about vaccination.

There is currently a risk of chikungunya in this country. Chikungunya is a virus spread through the bite of an infected mosquito. Chikungunya can cause a viral disease that typically causes fever and pain in the joints. In some cases, the joint pain can be severe and last for months or years.

Protect yourself from mosquito bites at all times. There is no vaccine available for chikungunya.

• In this country, dengue fever may occur sporadically. It is a viral disease spread to humans by mosquito bites.
• Dengue fever can cause severe flu-like symptoms. In some cases, it can lead to dengue haemorrhagic fever, which can be fatal.
• The level of risk of dengue fever changes seasonally, and varies from year to year. After a decline in reported dengue cases worldwide in 2017 and 2018, numbers have been steeply rising again.
• Mosquitoes carrying dengue typically bite during the daytime, particularly around sunrise and sunset.
• Protect yourself from mosquito bites. There is no vaccine or medication that protects against dengue fever.

Zika virus is a risk in this country.

Zika virus is primarily spread through the bite of an infected mosquito. It can also be sexually transmitted. Zika virus can cause serious birth defects.

Pregnant women and women planning a pregnancy should visit a health care professional before travelling to discuss the potential risks of travelling to this country. Pregnant women may choose to avoid or postpone travel to this country.

Travel recommendations:

• Prevent mosquito bites at all times.
• If you are pregnant, always use condoms correctly or avoid sexual contact with anyone who has travelled to this country for the duration of your pregnancy.
• Women: Wait 2 months after travel to this country or after onset of illness due to Zika virus (whichever is longer) before trying for a pregnancy. If your male partner travelled with you, wait 3 months after travel or after onset of illness due to Zika virus (whichever is longer).
• Men: Wait 3 months after travel to this country or after onset of illness due to Zika virus (whichever is longer) before trying for a pregnancy.

For more travel recommendations, see the travel health notice: Zika virus: Advice for travellers

HIV (Human Immunodeficiency Virus) is a virus that attacks and impairs the immune system, resulting in a chronic, progressive illness known as AIDS (Acquired Immunodeficiency Syndrome). 

High risk activities include anything which puts you in contact with blood or body fluids, such as unprotected sex and exposure to unsterilized needles for medications or other substances (for example, steroids and drugs), tattooing, body-piercing or acupuncture.

Tuberculosis is an infection caused by bacteria and usually affects the lungs.

For most travellers the risk of tuberculosis is low.

Travellers who may be at high risk while travelling in regions with risk of tuberculosis should discuss pre- and post-travel options with a health care professional.

High-risk travellers include those visiting or working in prisons, refugee camps, homeless shelters, or hospitals, or travellers visiting friends and relatives.