12. Vaccination The vaccination for this virus is called Stamaril. When a vaccine enters your body, the vaccine holds a tiny portioin of the virus itself. Your body then fights off the small amount of the virus. This makes your body know how to fight off the whole virus if it ever comes back into your body. It is recommended for all people ages 9 months or older traveling to or living in areas in Africa, South America, and other areas where yellow fever is still active. For example if you are traveling to South America and you haven’t had your vaccination they won’t let you in.