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Diseases caused by Giardia, cryptoparasites in swimming pools on the rise: CDC




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Summer is here, which means the pool season is here, which means … Hello, parasite overlords? Per USA Today the CDC reports that every year between June and August, the number of Cryptosporidium or Cryptoparasite-related illnesses in "treated recreational waters" increases significantly. From 2009 to 2016, this number rose steadily, rising by 14.3% each year. Crypto is also not the only creeper: the Giardia parasite lurks in pelvis, and both parasites are chlorine resistant. Giardia can survive for up to 45 minutes in a well-chlorinated basin, while Krypto can prune it in the water for more than a week. When you get infected? "Unlike noroviruses or E. coli that cause diarrhea or vomiting for a few days, crypto-diarrhea can last up to three weeks," says rapporteur Michele Hlavsa. "That's not funny."

How the resulting "recreational aquatic diseases" (RWIs) come about, according to the CDC: Swimmers swallow water that contains feces, typically from a person who recently had diarrhea. Although the CDC says that anyone who had diarrhea may be able to spread their germs for up to two weeks, a recent survey found that nearly a quarter of respondents would plunge into the water just one hour after an episode. "We want to keep Krypto out of the pool in the first place, and the way we do it is not to swim or let our child swim when we have diarrhea," says Hlavsa USA Today . Recently, a demographic group of skinniers was also vulnerable to the Giardia parasite, but not to swimming pools: According to CBS Chicago, vets in Windy City noted an increase in pet infections most likely due to stagnant water in the streets last month that was left behind by many people last rain. (Read more about swimming pool stories.)

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