Aug 23, 2019

Cryptosporidiosis Cases Increase in Virginia Swimming Pools

More cases of cryptosporidiosis may be revealed by healthcare providers in the Virginia region

More cases of cryptosporidiosis may be revealed by healthcare providers in the Virginia region

In Stafford County, Va., Curtis Park and the Massad Family YMCA were closed following four reported cases of cryptosporidiosis.

According to Potomac Local, the Stafford County Government released the following statement Aug. 16:

“Stafford’s Mark Lenzi Pool at Curtis Park is closed today, Aug. 16, 2019, and will be closed tomorrow, Aug. 17, 2019, due to an advisory from the Rappahannock Area Health Department. The Health Department is aware of four people with cryptosporidiosis, a parasitic illness, who participated in a swim meet at the large pool at Curtis Park on Aug. 3, 2019. Cryptosporidiosis is a common occurrence in public pools and is one of the most common germs that cause waterborne illnesses in Virginia. There is no current evidence that the pool is contaminated.

The pools reopened Sunday, Aug. 18, 2019, according to However, more cases of cryptosporidiosis may come to light through research from a variety of healthcare providers in the region, said Nicole Sullivan, an epidemiologist at the Virginia Department of Health.

There have been 15 cases reported to health officials as of Aug. 23, according to Sullivan’s agency believe the exposure period occurred between the Massad Family YMCA Aug. 1 to 14, and the Curtis Park pool occurred between Aug. 3 to 16. The symptoms of exposure will usually develop in seven to 10 days, but it may take up to two weeks, according to

“Unfortunately, all it takes is one person swimming in a pool while infectious to impact a large number of people, so we may not know the initial source,” Sullivan wrote in an email, according to “But the Massad YMCA pool was exposed to cryptosporidium in their pools, and this was a source for many of the people that started showing symptoms in the past week or so.”

Curtis Park pools received hyperchlorination treatment to help with parasite exposure, which introduces high doses of chlorine into pools to disinfect its water systems, according to