USDA's National Veterinary Services Laboratories has detected porcine epidemic diarrhea (PEDV), a virus associated with outbreaks of diarrhea and vomiting, in the Iowa hog population, a USDA spokesman said on Friday.

The virus is not a food safety concern and does not affect humans, the spokesman said.

Officials with USDA's Animal and Plant Health Inspection Service (APHIS) held a call with livestock industry representatives on Friday to discuss the situation. It was not immediately clear how widespread the incidence of PEDV is at this point.

There are currently no interstate trade restrictions related to PEDV for U.S. hogs and pigs.

Hog futures in Chicago fell sharply on Friday as rumors swirled that the disease had been detected in Iowa and Minnesota. USDA so far has only confirmed detection of PEDV in Iowa.

PEDV exists in many parts of the world, including England, much of Europe, China, Taiwan and South Korea, according to Iowa State University. It closely resembles transmissible gastroenteritis (TGE) in swine. (Reporting By Ros Krasny; Editing by Chris Reese)