Understanding Contagious Equine Metritis
Haylie Pfeffer
March 20, 2025
Review how CEM spreads between horses, the most recent outbreaks, and biosecurity measures to prevent outbreaks in breeding and other horses.
Review how CEM spreads between horses, the most recent outbreaks, and biosecurity measures to prevent outbreaks in breeding and other horses.
Six outbreaks of CEM, an internationally reportable disease, have occurred in the United States in the past 15 years.
We take a look back at seven eye-opening equine disease outbreaks in the past 100 years, including influenza in Australia, equine viral arteritis in North America, and African horse sickness in Spain.
Reported diseases included African horse sickness, atypical myopathy, contagious equine metritis, salmonellosis, and more.
Officials reported diseases including African horse sickness, equine influenze, strangles, EHV-1, EIA, and more.
Confirmed diseases include equine influenza, equine herpesvirus, piroplasmosis, salmonellosis, rabies, and more.
New procedures are now in place to safeguard Britain’s equine population from future contagious equine metritis (CEM) outbreaks.
Use this four-step plan to keep equine infectious diseases in check.
From 1995 to 2014, the OIE received reports of 54 disease events associated with international horse movement.
Confirmed diseases include influenza, EHV, strangles, nocardioform placentitis, piroplasmosis, EIA, and more.
Cases of CEM, EHV-1, and more have taught officials how to best prevent and respond to outbreaks.
Horses from Korea will be subject to import restrictions to reduce risk of CEM being brought to the United States.
Diseases reported include African horse sickness, influenza, EHV, EIA, rabies, and more.
The codes are a guide to preventing and controlling equine diseases that could threaten the breeding industry.
The Reproductive Diseases in Horses Symposium will take place Nov. 19 in Lexington, Kentucky.
Asymptomatic carrier stallions maintain infectious agents in the breeding population from one season to the next.
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