More than 100 people in Maricopa County, Arizona, which includes the capital city of Phoenix, have contracted a diarrheal infection from contaminated pool water.
As many as 20 public pools, splash pads, and water parks are believed to be hosting a parasite called cryptosporidium, which can cause diarrhea, vomiting, cramps, and fever. In some cases, it can also damage the respiratory tract.
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The public is encouraged to "stay out of the water if you have diarrhea" so the illness does not spread further.
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