CEM update from DAFF

The Department of Agriculture, Forestry & Fisheries has just issued an update on the Contagious Equine Metritis situation in South Africa.

Contagious Equine MetritisContagious equine metritis (CEM) is a transmissible, venereal disease of horses caused by the bacterium Taylorella equigenitalis.

  • CEM is commonly transmitted directly during sexual intercourse between undetected CEM positive breeding mares and stallions. It can also occur indirectly by artificial insemination.
  • Initial exposure to the disease usually results in infertility. An infected mare may fail to conceive or she may spontaneously abort.
  • Stallions exhibit no clinical signs but can carry the CEM bacteria on their external genitalia for years.
  • Undetected carrier mares and stallions are the source of infection for acute outbreaks of the disease.

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