Yellow fever vaccination: A live attenuated (weakened) viral vaccine for yellow fever. Yellow fever vaccination is recommended for people traveling to or living in the tropical areas in the Americas and Africa where yellow fever occurs. Because yellow fever vaccination is a live vaccine, it should not be given to infants or people with immune-system problems.
Quick Guide8 First Aid Kit Essentials for Scrapes, Cuts, Bug Bites, and More in Pictures
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Last Editorial Review: 6/9/2016