Contagious equine metritis (CEM) is a venereal disease of horses caused by the bacteria Taylorella equigenitalis. It is spread during breeding or through. Importance. Contagious equine metritis (CEM) is a highly communicable venereal disease of horses, caused by the bacterium Taylorella. Information, factsheets, photos, resources, and vaccines for Contagious Equine Metritis.

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Haemophilus equigenitalis has been proposed as the species name of the Gram-negative, microaerophilic coccobacillus. Contagious equine metritis CEM is a type of metritis uterine inflammation in horses that is caused by a sexually transmitted infection.

Copyright and Contwgious information Disclaimer. In most cases, CEM can be successfully treated with disinfectants and antibiotics.

Fact Sheet – Contagious Equine Metritis

Where is CEM found? Sample collection and laboratory methods for the diagnosis of contagious equine metritis are described. Once the organism has been eliminated, the ketritis may be used for breeding again. However, a proportion of mares remain carriers of the contagious equine metritis organism. Serological response in mares affected by contagious equine metritis All horses of breeding age that are imported into Canada, from countries contagiouss CEM is endemic, must be tested for the disease before entering Squine.

Infection patterns in pony mares challenged with the agent of contagious equine metritis While one course of treatment may be sufficient in a stallion, it may take several months before the CEM organism can be successfully treated in a mare. CEM has never been detected in Canada but does exist primarily in non-thoroughbred populations throughout the world.


The first indication of the carrier state is lack of pregnancy in the mares covered by the stallion. Treatment of stallions is successful. Most mares with acute endometritis recover spontaneously.

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Contagious equine metritis – Wikipedia

How is CEM diagnosed? Associated Data Supplementary Materials. Inhibition of the CEM organism by the normal flora of the reproductive tract.

Successful transmission of CEM to the donkey. Canada’s emergency response strategy to an outbreak of CEM would be to:. CEM can be transmitted indirectly to mares and stallions via contaminated instruments and equipment metrtiis as tail bandages, buckets, sponges and gloves. Serological identification of the bacterial agent of contagious equine metritis. However, the infected stallion remains capable of transmitting disease. A passive haemagglutination test for the detection of antibodies to the contagious equine metritis organism.

Daily variations in the shedding of the agent of contagious equine metritis by a carrier mare. The disease can also be transmitted via cintagious insemination. However, the infertility only lasts a few weeks, after which pregnancy is possible.


Contagious equine metritis in the USA. The disease is primarily spread directly during natural breeding. The disease can cause infertility and, on rare occasions, abortion. This article has been cited by other articles in PMC.

Canada’s emergency response strategy to an outbreak of CEM would be to: Agglutinins to the causative organism of contagious equine metritis in human serum.

CEM is suspected when multiple mares that are bred by the same stallion experience short-term infertility and have vaginal discharge.

Laboratory testing is needed to confirm the diagnosis. Additional information Animal Health Offices. Venereal infection in thoroughbreds with Bacillus proteus mirabilis. Contagious equine metritis and AI. After drying, nitrofurazone cream is applied to these areas.

A taxonomic study of the genus Haemophilus, with the proposal of a new species. Views Read Edit View history. An epidemic of venereal infection in thoroughbreds. Attempted transmission of contagious equine metritis to other domestic animal species.

Survival properties of the causal agent of contagious equine metritis