What should you know about yellow fever vaccine duration?

Yellow fever vaccination is generally planned as a long-lasting travel-health measure. The certificate is a separate practical issue: it records the vaccination and may be required by countries on your route. Entry rules can depend on your destination, transit points, and the places you have recently visited.

Some travellers may need an individual review because of a previous dose, an incomplete document, a changed itinerary, or a health condition affecting vaccine decisions. Do not assume an old record or a verbal history will satisfy a border check.

Book a travel-health appointment well before departure. Take previous vaccination records, your passport, and a list of every destination and transit stop. The clinician can check whether vaccination is indicated, whether a certificate needs to be issued, and whether another travel precaution is needed.

Store the original certificate in a protected place and keep it accessible during travel. If your itinerary changes, check the rules again because a new transit country can change the documents requested at the border.

Seek medical guidance before vaccination if you are pregnant, immunocompromised, have a history of severe allergy, or have had a concerning reaction to a vaccine. After vaccination, obtain urgent care for breathing difficulty, facial swelling, collapse, confusion, or a severe illness.

Ask how your previous record applies to this trip, whether your certificate is complete, and whether your health conditions affect the recommendation. Ask which countries on your route might inspect the document.