CONTACT: DAVE PEDERSEN
Iowa City IA 52242
(319) 335-8032; fax(319) 335-8034
Release: Nov. 1, 2000
EPA official to lecture at UI Nov. 3
IOWA CITY, Iowa -- Rebecca Calderon, Ph.D., chief of the U.S. Environmental
Protection Agency's Epidemiology and Biomarkers Branch, Human Studies Division,
will present findings from a study conducted in Iowa on Cryptosporidium in
The presentation will be at 9:30 a.m. Friday, Nov. 3 in the Gold Room at
Oakdale Hall on the University of Iowa Oakdale Research Campus. The event
is hosted by the UI Center for Health Effects of Environmental Contamination.
The EPA study was conducted to determine the immune response in people potentially
exposed to Cryptosporidium in drinking water from surface water and groundwater
sources. Researchers conducted a serological study of blood donors from two
Iowa cities with different sources of drinking water -- filtered and chlorinated
river water receiving agricultural and domestic sewage upstream, and chlorinated
water from an underground aquifer. The investigators then compared the serological
responses of donors from the two groups who had Cryptosporidium antigens in
The research findings, similar to two other paired city studies involving
communities in the Midwest and Southwest, suggest that endemic Cryptosporidium
infections may occur more commonly in certain cities using surface drinking
water sources. Other risk factors evaluated included travel (domestic and
international), contact with children, contact with animals, food practices
and bottle water use.
None of the infected participants had been diagnosed with cryptosporidiosis
and few reported symptoms of prolonged enteric (related to or affecting the
For more information on the event, contact David Riley at (319) 335-4016.
University of Iowa Health Care describes the partnership between
the UI College of Medicine and the UI Hospitals and Clinics and the patient
care, medical education and research programs and services they provide.