(CNN) — Before you head to the pool, listen up. There could be something in the water that could literally turn your stomach.
It’s a parasite called Cryptosporidium or “Crypto” for short. It is spread by feces and the CDC says they are seeing more and more people come down with it. Click here for their profile on the parasite.
In fact, in a report that came out Friday, the CDC says they have seen a nearly 13% increase every year between 2009 and 2017. Most people who get “Crypto” get it from the pool but you can also get it from lakes and cattle.
They say it can cause “profuse, watery diarrhea” for as long as three weeks. it can be worse for kids, pregnant women and anyone who has a compromised immune system.
What can people do to avoid obtaining the bacteria? Chlorine and filters are not enough to keep “Crypto” away so if you go to the pool, shower after.
Also, if you know anyone who has had diarrhea recently, do not let them in the pool.