Iowa Pool Parasites
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Des Moines, IA - Health officials in Polk County are warning swimmers about a waterborne illness.
Des Moines television station KCCI is reporting 68 cases of cryptosporidium this month alone. That's six cases more than last July.
Cryptosporidium is a chlorine-resistant, highly infectious parasite that causes diarrhea and abdominal cramping.
Signs are posted at some Des Moines-area aquatic centers warning people with diarrhea to stay away.