How germy is the public pool? An infectious disease expert weighs in
Summary
Public swimming pools can contain germs that may lead to illnesses like skin infections and diarrhea. While chlorine is used to kill many germs, it doesn’t work immediately and doesn’t kill all of them. Understanding risks and showering before and after swimming can help reduce the chances of getting sick.Key Facts
- Public pools and water parks may contain germs that can cause infections.
- Chlorine is effective for killing many germs but not all, and it requires time to work.
- The CDC tracked over 200 outbreaks linked to public pools from 2015 to 2019, with more than 3,600 people affected.
- Cryptosporidium is a tough germ that can survive in chlorine-treated water for up to 10 days and causes watery diarrhea.
- Pool water can also contain Pseudomonas aeruginosa, which causes rashes and ear infections.
- Sweat and urine in pools can create chloramines, which might pose health risks and cause a strong chlorine smell.
- Showering before and after swimming can help limit exposure to germs.
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