[Dr. Michael Beach] Cryptosporidium — let’s call it ‘Crypto’ for short — is one of the most common RWIs causing symptoms like diarrhea. In public pools in the United States, we use chemicals, like chlorine, to kill germs and protect our health. But superbugs like Crypto can survive for days in chlorinated water. You share the water with everyone, so play it safe; stay out of the water if you’re ill with diarrhea.
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