Milwaukee Cryptosporidium outbreak
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The 1993 Milwaukee Cryptosporidium outbreak was a significant distribution of the Cryptosporidium protozoan in Milwaukee, Wisconsin, and the largest waterborne disease outbreak in documented United States history. One of Milwaukee's two water treatment plants was contaminated, and treated water showed turbidity levels well above normal.
This abnormal condition at the plant lasted from March 23 through April 8, after which, the plant was shut down. Over the span of approximately two weeks, 403,000 of an estimated 1.61 million residents in the Milwaukee area (of which 880,000 were served by the malfunctioning treatment plant) were sickened. Over 100 deaths were attributed to this outbreak, mostly among the elderly and immunocompromised people, such as AIDS patients.
External links
- [Cryptosporidium and public health (Drinking Water and Health Newsletter)]
- [Cost of Illness in the 1993 Waterborne Cryptosporidium Outbreak, Milwaukee, Wisconsin (CDC)]
- [Cryptosporidium: A Risk to Our Drinking Water (Wisconsin DNR)]
- [A Massive Outbreak in Milwaukee of Cryptosporidium Infection Transmitted through the Public Water Supply (New England Journal of Medicine)]
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