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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A taxonomic study of the genus Haemophilus, with the proposal of a new species. However, the infected stallion remains capable of transmitting disease. The first indication of the carrier state is lack of pregnancy in the mares covered by the stallion. Canada’s emergency response strategy to an outbreak of Contagiious would be to:.

Inhibition of the CEM organism by the normal flora of the reproductive tract. These tests become positive 10 or more days after infection.

Sites of CEM infection. An asymptomatic carrier state exists in both mares and stallions.

Fact Sheet – Contagious Equine Metritis

What is being done to protect Canadian horses from CEM? Contagious equine metritis CEM is a type of metritis uterine inflammation in horses that is caused by a sexually transmitted infection. There are no outward signs of infection; however, the mare remains capable of transmitting infection. There are two states of infection:.

If positive, they only indicate that the mare has had the disease in the past, and do not indicate whether the mare is a carrier now. Genital infection in mares. Contagious equine metritis CEM is mefritis transmissible venereal disease in horses, caused by the bacterium Taylorella mertitis.

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Isolation of CEM organism. How is CEM transmitted and spread? Open in a separate window. A contagious genital infection of mares. The disease was first reported in on horse breeding farms in Englandwhen an unusually high proportion of mares were not becoming pregnant.

Contagious Equine Metritis: A Review

Signs in mares appear ten to fourteen days after breeding to an infected or carrier stallion. Contagious equine metritis is characterized by an endometritis and infertility and infected mares show no signs of systemic infection. Infected stallions tend metritsi be the major source of infection, as they can harbour the disease for years without showing any clinical signs.

The disease has been reported in Europe, Australia and the United States.

Fact Sheet – Contagious Equine Metritis – Canadian Food Inspection Agency

Agglutinins to the causative organism of contagious equine metritis in human serum. CEM can be transmitted indirectly to mares and stallions via contaminated instruments and equipment such as tail bandages, buckets, sponges and contagilus.

Taylorella equigenitalis is susceptible to most antibiotics, although the carrier state in mares is difficult to eliminate. Haemophilus equigenitalis has been proposed as the species name of the Gram-negative, microaerophilic coccobacillus.

Contagious Equine Metritis « CFSPH

A gray to creamy vulvar discharge ckntagious the hair of the buttocks and tail, although in many cases, the discharge is absent and the infection is not apparent. Clinical signs have not been observed in stallions. Contagious equine metrtis and AI. How is CEM treated? There is no human health risk associated with CEM. Laboratory equije is needed to rquine the diagnosis. However, the infertility only lasts a few weeks, after which pregnancy is possible.


Once the organism has been eliminated, the horse may be used for breeding again. Sample collection and laboratory methods for the diagnosis of contagious equine metritis are described.

Infected mares are usually infertile during the acute illness. Venereal infection equune thoroughbreds with Bacillus proteus mirabilis. CEM and the foaling mare.

Samples are refrigerated and transported to an approved testing laboratory metritiis 48 hours of collection. Serological identification of the bacterial agent of contagious equine metritis.

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

The Veterinary Clinics of North America. All horses of breeding age that are imported into Canada, from countries where CEM is endemic, must be tested for the disease before entering Canada. From Wikipedia, the free encyclopedia. It is relatively easy to eliminate the carrier state in stallions using local disinfectant. Views Read Edit View history. In Canada, contagious equine metritis has been designated a reportable disease under the Animal Disease and Protection Act.

After entry into Canada, both stallions and mares are quarantined, where they undergo further extensive testing. The causative organism of contagious equine metritis Abstract Contagious equine metritis is a highly contagious genital infection of mares, spread venereally, and was first described in Contagious equine metritis in the USA.