Number of U.S. Horses Exposed to CEM Hits 920

by: Erin Ryder
The ongoing investigation into contagious equine metritis (CEM) now includes more than 920 exposed or positive horses, according to the USDA. The investigation began in mid-December 2008, when a Quarter Horse stallion on a Kentucky farm tested positive during routine screening for international semen shipment. According to the USDA's Animal and Plant Health Inspection Service (APHIS), ...