Diarrhea-Causing Parasite on the Rise in US Swimming Pools: CDC

Children swim in the LA Swim Stadium Pool

Children swim in the LA Swim Stadium Pool

For example, the researchers said Arizona health officials used the system a year ago to confirm a specific type of Cryptosporidium that spread to multiple swimming pools around Phoenix.

Outbreaks caused by the parasite Cryptosporidium, which is often seen in swimming pools, have more than doubled from 2014 to 2106, CDC researchers reported. It's the most common cause of diarrhea outbreaks linked with swimming facilities because it can survive up to 10 days in chlorinated water, Reuters reported.

Symptoms of crypto infection include watery diarrhea, stomach cramps, nausea, or vomiting, which can lead to dehydration.

California records for 2008 through 2015 identified eight additional instances of toxic chlorine gas releases at public water venues caused by either equipment failure or human error.

Next time you decide to take a dip in a pool, make sure you don't swallow the water. It is also warning parents not to change diapers near a pool, but Conrad said there is something else people are forgetting.

The CDC has warned about crypto outbreaks in the United States.

In Arizona, an outbreak involving a Little League team and family members was traced to a July visit to an aquatic center, and Ohio's report involved members of a college sports team who were part of a waterpark-related outbreak.

Randy Sellers at SwimMAC Carolina in Charlotte said a full-time pool technician checks pool chemicals daily, but when it comes to crypto, he said communication from parents is key.

Once a pool or water playground is infected with crypto, it's easy to spread, but not easy to get rid of. Comparatively, 13 crypto outbreaks in the year 2013, 16 in 2012, and 20 in 2011 connected to swimming were reported. The biggest part if not letting your kid swim if they have recently been sick. Even the cleanest pools can catch the parasite.

There may be more in your public swimming pool than just water.

She added that swallowing even a bit of water can cause illness.

"Bacteria are usually killed within a minute or less of contact with chlorine".

However, the CDC does not recommend upping the levels of chlorine in a properly treated pool to try to avoid this problem.

That last tip is important not just for preventing pooping accidents, but for keeping kids from urinating in the pool.

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