GENEVA (AP) — The World Health Organization says a yellow fever booster vaccination given 10 years after the initial shot isn't necessary.
The U.N.'s global health agency said Friday that its expert group on immunization believes a single dose of vaccination is sufficient to confer lifelong immunity against the disease.
The Geneva-based body says only 12 known cases of yellow fever after vaccination have ever been identified. Some 600 million doses have been dispensed since yellow fever vaccination began in the 1930s.
Yellow fever is an acute viral hemorrhagic disease transmitted by infected mosquitoes that is endemic to 44 countries in tropical areas of Africa and the Americas.
There are an estimated 200,000 cases of yellow fever and up to 15,000 deaths worldwide each year.
Copyright 2013 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.
To comment, the following rules must be followed:
Comments may be monitored for inappropriate content, but the station is under no legal obligation to do so.
If you believe a comment violates the above rules, please use the Flagging Tool to alert a Moderator.
Flagging does not guarantee removal.
Multiple violations may result in account suspension.
Decisions to suspend or unsuspend accounts are made by Station Moderators.
Links require admin approval before posting.
Questions may be sent to firstname.lastname@example.org. Please provide detailed information.