The following countries are regarded as yellow fever endemic :

Africa :

Angola, Benin, Burkina Faso, Burundi, Cameroon, Central African Republic, Chad, Congo, Democratic Republic of Congo (Zaire), Equatorial Guinea, Ethiopia, Gabon, Gambia, Ghana, Guinea, Guinea Bissau, Ivory Coast (Cote D’Ivoire), Kenya, Liberia, Mali, Niger, Nigeria, Rwanda, Sao Tome and Principe, Senegal, Sierra Leone, Somalia, Sudan (South of 15° N), Togo, Uganda, Tanzania and Zambia.

South America :

Bolivia, Brazil, Colombia, Ecuador, French Guiana, Guyana, Peru, Suriname, Trinidad and Tobago, Venezuela and Panama.

:: A Yellow fever vaccination certificate is valid only if it conforms to the model.  The validity period of international certificate of vaccination or re-vaccination against yellow fever is 10 years, beginning 10 days after vaccination.

:: Foreign nationals residing or who have passed through the Yellow fever endemic countries during the preceding six days, are granted visas only after the production of vaccination certificate of Yellow Fever.  After checking the vaccination certificate an entry reads as “Valid Yellow Fever Vaccination Certificate Checked” is made in the passport of the foreigner.