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Community Immunity
Learn how immunizing a critical portion of a community protects most members of the community.



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NIAID Research

Rotavirus is the leading cause of severe diarrhea in children. Each year, an estimated 527,000 children die from diarrhea caused by rotavirus, and another 2 million are hospitalized. NIAID supports a broad range of research to better understand, treat and ultimately prevent this serious global health problem.

Last Updated May 14, 2013

Last Reviewed June 10, 2010