Waterborne pathogen capable of inducing watery diarrhea found to persist in chlorinated pool water for up to ten days - exploring other hidden threats in swimming pools
In the heat of summer, a refreshing dip in a public swimming pool may seem like the perfect escape. However, recent studies have highlighted a concerning trend: an increase in waterborne diseases linked to these recreational venues.
Chlorine, a common germ killer, is often used to treat pool water. While effective, it doesn't work instantly, and some harmful germs can survive in treated water for minutes or even days. For instance, Cryptosporidium, a microscopic parasite, can persist in chlorine-treated water for up to 10 days.
Cryptosporidium is a resilient parasite that can cause watery diarrhea. Between 2009 and 2017, it caused nearly 450 outbreaks across 40 states and Puerto Rico, sickening more than 7,400 people. Outbreaks of cryptosporidium increased by 13% each year, with most traced back to people swallowing water from treated pools.
The parasite spreads when someone with diarrhea contaminates the water, and another swimmer swallows it. It's not just swimming that poses a risk; most pool-related diseases occur when swimmers swallow contaminated water or come into contact with it through their skin.
Other harmful substances can also lurk in chlorinated water. Shigella, norovirus, adenovirus, Legionella, Pseudomonas, and fungi are just a few examples. Legionella can cause a serious form of pneumonia, while Pseudomonas is known for triggering skin rashes and ear infections.
To minimize the risk, the Centers for Disease Control and Prevention (CDC) recommends several precautions. Before swimming, shower for at least a minute to rinse off dirt, sweat, and any lingering germs. If you have diarrhea, stay out of the water and wait at least two weeks after symptoms clear up to take a dip.
It's also important to note that a strong chlorine smell is not indicative of a clean pool; it may be a sign of contaminated water. Pool decks, ladders, and locker rooms are breeding grounds for fungal spores that are hard to eliminate and often resistant to regular cleaning.
In conclusion, while public swimming pools offer a fun and refreshing way to beat the heat, it's crucial to be aware of the potential risks associated with waterborne diseases. By following simple precautions and maintaining good hygiene, we can enjoy our summer swims while staying safe.
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