International Health Regulations (2005) for seafarers
IHR (2005) · World Health Organization
- WHO
- In force
- Checked 6 October 2026
Contents3
1 What it covers
The International Health Regulations are the World Health Organization treaty on preventing the international spread of disease. For seafarers the relevant rules cover vaccination certificates: the form of the international certificate and the requirements for vaccination against yellow fever.2
A certificate of vaccination against yellow fever is valid for life, including certificates issued earlier; validity for travel starts 10 days after vaccination.3
2 Documents in the reference
3 Where to read the text
WHO publishes the official text of the Regulations and their amendments on its website. This page is our own explanation.
