Parasite

A picture of a competition swimming pool.
ruurmo / flickr.com/photos/rufino_uribe/178577542/

Wake County is encouraging its 1,600 public pools to shock treat their water to kill a diarrhea-causing parasite.

Twenty cases of cryptosporidiosis have been reported to the county health department. The diarrhea disease is caused by a parasite that can spread if contaminated water gets in a person's mouth. Other symptoms can include stomach cramps, nausea, vomiting and fever and can last one to two weeks.