The Water's Not Fine: U.S. Pool Linked Infection Doubles In 2 Years

During a diarrheal incident, "a typical person who's sick with Cryptosporidium can release 10 million to 100 million oocysts, which is the infectious stage of crypto," Hlavsa said. "Swallowing 10 or fewer of these oocysts can make you sick. Looking at a typical-sized pool, even swallowing a mouthful of water can make us sick."

Source : http://health.usnews.com/health-care/articles/2017-05-18/the-waters-not-fine-us-pool-linked-infection-doubles-in-2-years

The Water's Not Fine: U.S. Pool-Linked Infection Doubles in 2 Years
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The Water's Not Fine: U.S. Pool-Linked Infection Doubles in 2 Years
U.S. Pool-Linked Infection Doubles in 2 Years