It looks like you're using an Ad Blocker.
Please white-list or disable AboveTopSecret.com in your ad-blocking tool.
Some features of ATS will be disabled while you continue to use an ad-blocker.
The parasite's full name is cryptosporidium. It causes cryptosporidiosis, which can leave healthy adults suffering from "profuse, watery diarrhea" for as long as three weeks. The effects can be worse for children, pregnant women and those with compromised immune systems.
"The number of treated recreational water-associated outbreaks caused by cryptosporidium drives the summer seasonal peak in both waterborne cryptosporidiosis outbreaks and cryptosporidiosis outbreaks overall," according to a statement from the US Centers for Disease Control and Prevention.
As for pools, anyone suffering diarrhea should avoid swimming until at least two weeks after their diarrhea subsides, the CDC says.