More than 100 people in the Phoenix area [Maricopa County, Arizona] have been sickened in an outbreak of the diarrhea-causing parasite _Cryptosporidium parvum_, and Maricopa County officials have identified more than 20 recreational water facilities — including splash pads, water parks, and public pools — that may have been contaminated.
http://www.promedmail.org/post/4436035
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