What should you know about yellow fever vaccine for international travel?

There are two related but different reasons to discuss yellow fever vaccination: protection from exposure during travel and compliance with border requirements. A country may consider your recent route, not only your final destination, when deciding whether to inspect a certificate.

Your itinerary matters in detail. Rural stays, outdoor activities, visits to more than one country, and airport transit can affect the advice. A clinic can help distinguish a vaccine recommended for health protection from a vaccine considered because of entry documentation.

Arrange a travel-health consultation before departure, ideally before finalising a complex itinerary. Take your passport, travel dates, accommodation locations, transit details, previous vaccine records, and a current medication list. The clinician can review vaccine suitability and issue documentation when appropriate.

Use bite-prevention measures during travel where mosquitoes may spread illness: cover exposed skin, use an appropriate repellent, and follow local advice about accommodation and outdoor activity. Carry your certificate in its original form with your passport.

Before travel, obtain individual advice if you are pregnant, immunocompromised, have a serious allergy history, or have had a previous vaccine reaction. Seek urgent care after vaccination for breathing difficulty, swelling of the face or throat, collapse, confusion, or a severe illness. Get prompt assessment for fever during or after travel in an area where yellow fever can occur.

Ask which parts of your route create exposure or certificate concerns, how long before departure you should attend, and how to protect yourself from mosquito bites. Ask what documentation you should carry if vaccination is not suitable.