Yellow Fever Travel Update: Do You Need a Vaccine or Certificate?
A recent travel health update has highlighted the mosquito-borne virus yellow fever activity in Trinidad and Tobago, after the virus was confirmed in a deceased monkey. No human cases have been reported, but local health authorities are carrying out surveillance and vector control measures. This is a useful reminder that yellow fever remains a serious travel health consideration in some parts of the world.
For most travellers, the key question is not whether yellow fever is in the news, but whether their destination, route, or entry requirements mean they need a vaccine or an official certificate. That is where travel advice becomes important.
What is yellow fever?
Yellow fever is a viral infection spread by infected mosquitoes in parts of Africa and South America. It can range from a mild flu-like illness to a serious infection affecting the liver and other organs. Because of that risk, vaccination is recommended for some travellers and required for entry by some countries.
Why is this in the news now?
According to NaTHNaC’s TravelHealthPro update, Trinidad and Tobago reported confirmed yellow fever in a deceased monkey on 24 March 2026. No human cases have been detected, but surveillance and mosquito control measures are under way. The last significant outbreak in Trinidad was reported in 1979.
Updates like this matter because they can affect how travellers assess risk, especially if they are visiting more than one country on the same trip.
Do I need a yellow fever vaccine?
Not everyone does.
Whether you need vaccination depends on:
where you are travelling
whether you are visiting a yellow fever risk area
whether you are transiting through a risk country
the rules of the country you are entering
your age and medical history
Some countries require proof of yellow fever vaccination for entry, even if the vaccine is not routinely recommended for your final destination. In other words, it is not just about where you are going, but also how you are getting there.
Do I need a yellow fever certificate?
Possibly.
Some destinations require an International Certificate of Vaccination or Prophylaxis as proof of yellow fever vaccination. This is particularly relevant for travellers entering a country after visiting or transiting through an area where yellow fever is a recognised risk. Travel rules can be quite specific, so it is worth checking this properly before you fly.
When should I get advice?
It is best to get travel advice well before departure, especially if:
your trip is coming up soon
you are visiting multiple countries
you are not sure whether a stopover counts
you have a condition or medication history that may affect vaccine suitability
you need documentation for entry
Yellow fever vaccination is not appropriate for everyone, so a proper travel assessment matters.
How can I check what my destination needs?
Simply use NaTHNaC (the National Travel Health Network and Centre). Their website, TravelHealthPro, lets you check what each country requires and what the current health risks are.
How Pharmacy Clinic Edinburgh can help
Pharmacy Clinic Edinburgh is a Yellow Fever Vaccination Centre, private pharmacy and clinic in Edinburgh. If you need a travel health consultation, our TravelSafe service offers expert advice across vaccines, mosquito-borne diseases, bite prevention and common travelling illnesses. Our premises are at 47 London Road, Edinburgh, EH7 5SP.
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