Mon-Fri 8 to 5:30
Sat. by appointment only
31310 Woodhaven Trail
Cannon Falls, MN 55009
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651-222-0885 Twin Cities
Contagious Equine Metritis (CEM)
You’ve heard about it but what is it?
Contagious Equine Metritis
was first discovered in England in 1978 and has scarily made
its way to the United States. CEM is a highly contagious,
sexually transmitted bacterial disease spread by infected
stallions to mares during live cover, artificial
insemination, or by using non sterilized gloves and
instruments. CEM fatality has not been reported, however the
effects can be devastating.
Stallions should be tested
prior to the breeding season because they do not always
exhibit signs of being infected with CEM. Infected stallions
are usually passive carriers, meaning that they do not show
clinical signs of infection but have bacteria within the
flora of their external genital organs. If bred to an
infected stallion, the mare may develop a discharge from the
vulva, resulting from inflammation of the uterus. If a
suspected infection occurs, she should be cultured.
The severity of the disease
In the acute state:
the mare has an active inflammation and obvious
discharge that is seen 1-6 days after breeding.