Increase in Cryptosporidiosis Outbreaks from 2009–2017

Cryptosporidium is the leading cause of outbreaks of diarrhea linked to water and the third leading cause of diarrhea associated with animal contact in the United States. According to a new Morbidity and Mortality Weekly Report article, from 2009–2017, 444 cryptosporidiosis outbreaks, resulting in 7,465 cases, were reported by 40 states and Puerto Rico. The number of reported outbreaks has increased an average of approximately 13% per year. Leading causes include swallowing contaminated water in pools or water playgrounds, contact with infected cattle, and contact with infected persons in child care settings.

To prevent cryptosporidiosis outbreaks, CDC recommends not swimming or attending child care if ill with diarrhea and recommends hand washing after contact with animals.

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