Iowa Testing Horses for CEM

Iowa is one of more than 30 states testing horses that might have been exposed to contagious equine metritis (CEM) following the discovery of infected Quarter Horse and Paint stallions in Kentucky and Indiana. No Iowa horses have tested positive for the disease.

Iowa has received notification of a few mares that were artificially inseminated with semen last year from stallions that have now tested positive for CEM. All of those horses are being be blood tested and cultured and will be treated.

CEM is a contagious disease transmitted during breeding that can cause temporary infertility in mares. Infected stallions can carry the bacteria and show no clinical signs of the disease. It does not affect humans and infected horses can be treated with antibiotics.

According to the USDA's Animal and Plant Health Inspection Service Web site, the investigation now includes 179 horses, comprised of 23 stallions and 156 mares, located in 35 States.

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