Yellow Fever Vaccine Zone. Therefore proof of yellow fever vaccination should not be required if traveling from one of these countries to another country with a vaccination entry requirement unless that country requires proof of yellow fever vaccination from all arriving travelers. A booster dose of the vaccine is not needed.
Yellow fever vaccine is the best protection against yellow fever disease which can be fatal. Yellow fever is a viral infection that occurs in Africa and South America. A fever is a body temperature that is higher than normal.
Yellow fever vaccine is the best protection against yellow fever disease which can be fatal.
However vaccination might be considered for a small subset of travelers to these areas who are at increased risk for exposure to YF virus because of prolonged travel heavy exposure to mosquitoes or inability to avoid mosquito bites. Currently there is a large ongoing outbreak of yellow fever in Brazil including areas close to popular destinations like the cities of Rio de Janeiro and São Paulo. Yellow fever is a viral infection that occurs in Africa and South America. About 15 of people who get yellow fever develop serious illness that can lead to bleeding shock organ failure and sometimes death.