Yellow Fever is a serious viral infection that’s usually spread by a type of daytime biting mosquito known as the Aedes aegypti. It can be prevented with a vaccination.
Yellow fever mainly occurs in sub-Saharan Africa (countries to the south of the Sahara desert), South America (especially the Amazon) and in parts of the Caribbean.
Yellow fever can be fatal. About 8% of people who get yellow fever die from it.
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