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Africa’s Yellow Fever Alert Highlights Traveler Risks

In Travel Vaccine News by Travel Vaccine

Initially referred to as "yellow jack" centuries ago because of the yellow quarantine flag hoisted by sailing ships carrying infected passengers and crew, the yellow fever virus remains active today.
According to the U.S. CDC, about thirty countries are 'endemic' for the mosquito-carrying yellow fever virus. 
And recent outbreaks in Africa indicate the disease poses an ongoing threat to humans.