Contagious Equine Metritis (CEM)


CEM Prompts Restrictions on Virgin Islands Horse Imports

May 30, 2013

Officials implemented equine import restrictions after CEM was confirmed in a horse in Puerto Rico.... Read More


International Equine Disease Report, Fourth Quarter 2012

April 23, 2013

Reported diseases include contagious equine metritis, strangles, influenza, equine herpesvirus, and more.... Read More


USDA Issues Rule on Importing Horses from CEM-Affected Countries

February 13, 2013

APHIS took this action after reviewing probable causes of CEM outbreaks in the United States.... Read More


California Mare Tests Positive for Contagious Equine Metritis

February 13, 2013

A 17-year-old Lusitano mare from California has been confirmed positive for contagious equine metritis.... Read More


Understanding the OIE's Role in Disease Prevention

February 02, 2013

The World Organization for Animal Health’s (OIE) standards help prevent the spread of infectious disease.... Read More


International Equine Disease Report, Third Quarter 2012

January 11, 2013

Diseases reported include contagious equine metritis, equine herpesvirus, piroplasmosis, and more.... Read More


CEM: An Insidious and Potentially Pervasive Disease

October 13, 2012

Contagious equine metritis (CEM) gives rise to considerable concern among horse breeders in many countries.... Read More


International Equine Disease Report, Second Quarter 2012

October 09, 2012

Equine influenza, equine herpesvirus, strangles, contagious equine metritis, and confirmed around the world.... Read More


Taylorella Genome Sequence Furthers CEM Comprehension

April 15, 2012

The genome of Taylorella equigenitalis, the causative agent of contagious equine metritis, has been sequenced.... Read More


International Equine Disease Report, Fourth Quarter 2011

April 09, 2012

Reported included diseases contagious equine metritis, equine influenza, strangles, and equine herpesvirus.... Read More


AAEP Release Guidelines on Equine Venereal Disease Control

February 15, 2012

The guidelines focus on controlling the transmission of EAV, CEM, and EHV-1.... Read More


Arizona Stallion Reported Positive for CEM

July 26, 2011

A stallion in Arizona has tested positive for contagious equine metrititis (CEM), a sexually transmitted ... ... Read More


International Equine Disease Report, First Quarter 2011

July 07, 2011

The International Collating Center, Newmarket, United Kingdom, and other sources reported the following ... Read More


Contagious Equine Metritis Detected in South Africa

May 14, 2011

Two cases of contagious equine metritis (CEM) have been confirmed in the South African province of Gauteng, ... Read More


International Equine Disease Report, Fourth Quarter 2010

April 06, 2011

International reports of contagious equine metritis, equine herpesvirus, equine influenza, strangles, equine piroplasmosis, equine arteritis virus, Eastern equine encephalomyelitis, West Nile virus, salmonella, and more.... Read More


New USDA Rule for Horses Imported from CEM-Affected Countries

March 28, 2011

The USDA's Animal and Plant Health Inspection Service (APHIS) is amending its regulations regarding the importation of horses from countries affected with contagious equine metritis (CEM). "The additional testing added to our existing import ... Read More


AAEP 2010 Convention Complete Coverage

March 17, 2011

A wrap-up of the 2010 AAEP Convention, including in-depth coverage of nearly 100 presentations and sessions.... Read More


Possible Deadline for CEM Lawsuits

December 03, 2010

Horse owners whose animals were affected by a contagious equine metritis (CEM) outbreak during the 2009 breeding season might have the option of filing a lawsuit for damages against the USDA's Animal and Plant Health Inspection Service (APHIS).... Read More


The War On Microbes (Emerging Equine Diseases)

November 01, 2010

In the face of potentially disastrous global warming events, pathogenic microscopic organisms appear to be on a mission to impact the surviving species. Bacteria, viruses, fungi, and parasites are rapidly adapting to... Read More


Contagious Equine Metritis Update

June 11, 2010

Late this spring a 23rd stallion in the United States was found to be infected with the Contagious Equine Metritis-causing organism Taylorella equigenitalis, according to a news release from the Office of the (KY) State Veterinarian. ... Read More


CEM: Lower-Cost Stallion Testing Continues

May 20, 2010

In an effort to show that Contagious Equine Metritis (CEM) does not exist or is at very low levels in the US equine horse population, the USDA is offering lower-cost testing to owners of active breeding stallions through August. It is part of a... Read More


CEM Investigation: 23 Positive Stallions

March 29, 2010

A stallion in Wisconsin has become positive stallion No. 23 in an ongoing investigation into contagious equine metritis (CEM).

Wisconsin State Veterinarian Robert Ehlenfeldt, DVM, said this horse is considered part of the outbreak th... Read More


Voluntary CEM Surveillance Testing Announced

February 09, 2010

Stallion owners are asked to participate in a voluntary surveillance test effort for contagious equine metritis (CEM) in order to help animal health authorities collect accurate information on the presence (or absence) of the disease in the Uni... Read More


Contagious Equine Metritis A Hot Topic at Vet Convention

December 24, 2009

The Contagious Equine Metritis (CEM) Table Topic attracted an audience of about 60 veterinarians at the 2009 American Association of Equine Practitioners (AAEP) Convention in Las Vegas, Nev. The audience ranged from practitioners to researchers... Read More