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Disease Outbreak Alerts

Updates on current disease outbreaks are listed here as they occur and will include the date listed, disease name, location and current status. Specific premises will not be named but the general location by town, county and state will be listed. When locations, events or horses are at risk they will be listed. Updates will be posted as they are received.


Date Disease Location Status
May 26, 2017 Strangles Osceola County, FL Confirmed case(s): Quarantine
Source: Florida Department of Agriculture and Consumer Services

On May 26, one premise in Osceola County, Florida was placed under quarantine for clinical signs of strangles.  The index case became clinical around May 20.  None of the six horses on the premises have left the premises since clinical signs began. This the first case for Osceola County and case 22 for Florida in 2017.

 

May 26, 2017 Strangles Boise, ID Outbreak Update
Source: Bureau of Land Management

On May 24, 2017, the Bureau of Land Management announced the temporary suspension of wild horse and burro adoptions at the Boise BLM Wild Horse Corrals due to the presence of strangles (equine distemper) in several horses. Horses showing sickness were first observed on May 17. Laboratory testing confirmed the presence of Streptococcus equi equi in one horse, with six others being symptomatic. There are currently 133 animals in the facility. Affected animals are being treated by a veterinarian and showing signs of improvement. BLM has temporarily closed the corrals to adoptions and public visitors as a precaution to prevent the spread of the disease. For more information or to adopt a wild horse or burro the public may contact the BLM Boise District Office at (208) 384-3300 to provide their contact information. They will be contacted to schedule an appointment after the corrals reopen for adoptions.

 

May 23, 2017 Equine Infectious Anemia Weld County, CO Outbreak Update
Source: State Veterinarian's Office, Colorado

This is a summary and clarification of horses recently diagnosed with EIA in Colorado. On May 2, 2017, 9 of 18 horses at a Weld County premises were tested for EIA and Piroplasmosis for entry into sanctioned racetracks. One horse tested positive for EIA and was euthanized and subsequently an additional nine cohort horses were tested. Two of  these additional 9 horse tested positive for EIA and were euthanized. The remaining 15 horses were quarantined at that barn for sixty days when they will be retested for EIA and Piroplasmosis.  On May 12, 2017 nine more horses at a second premises in Weld County, that were epidemiologically linked to the original three positive EIA horses on the first premises, were tested.  An additional three horses on the second premises tested positive for EIA and were euthanized. The remaining six horses on the second premises were quarantined for 60 days when they will be retested for EIA. Currently there are 15 horses quarantined at the initial premises and 6 horses at the second premises pending retesting for EIA.

May 22, 2017 Strangles Lake County, FL Confirmed case(s): Quarantine
Source: Florida Department of Agriculture and Consumer Services

On May 20, 2017 one premise in Lake County, Florida was placed under quarantine for clinical signs and positive PCR for strangles.  The index case became clinical on May 18, approximately three weeks after arriving from Bastrop, LA.  No horses have left the premises since clinical signs began and the horse was properly isolated upon arrival. This the first case for Lake County and case 21 for Florida in 2017.  To date in 2017, 16 of the 21 strangles cases have direct epidemiological links to the horses sold at the Bastrop, Louisiana facility and the individuals that distribute them throughout the country.

May 19, 2017 Equine Infectious Anemia Weld County, CO Confirmed case(s): Quarantine
Source: State Veterinarian's Office, Colorado

Three horses out of 9 horses exposed in Weld County, Colorado tested positive for Equine Infectious Anemia (EIA). Six horses are now quarantined. None of the horses testing positive had clinical signs of the disease. For more info go to: https://www.colorado.gov/pacific/agmain/news/582017-eia-positive-horse-identified-colorado

May 09, 2017 Equine Infectious Anemia Weld County, CO Confirmed case(s): Quarantine
Source: State Veterinarian's Office, Colorado

Based on a test at the  National Veterinary Services Laboratory, a 5-year old racing quarter horse in Fort Lupton, Colorado was diagnosed with Equine Infectious Anemia (EIA). The mare was asymptomatic and was euthanized. The stable with a total of 18 horse is quarantined restricting movement of horses for 60 days. For more information go to: https://www.colorado.gov/pacific/agmain/news/582017-eia-positive-horse-identified-colorado  and for information on EIA go to http://www.aphis.usda.gov/vs/nahss/equine/eia/eia_info_sheet.pdf

May 09, 2017 Equine Herpes Viruses Mesa County, CO Confirmed case(s): Quarantine
Source: Office of the State Veterinarian, Colorado

A 17-year old quarter horse mare used for barrel racing was diagnosed with Equine Herpesvirus myeloencephalopathy (EHM) in Grand Junction,  Mesa County, Colorado. The mare is recovering from urinary incontinence and hindlimb ataxia. The premises with a total of 10 horses is quarantined with restricted movement and all horses having temperatures taken twice daily. As of this date no further horses have shown signs of the disease. For more information on EHM go to: https://aaep.org/sites/default/files/Documents/DiseaseFactsheetEHM.pdf

May 05, 2017 Equine Herpes Viruses Sacramento County, CA Quarantine Released
Source: California Department of Food and Agriculture

Since the removal of the 15-year-old Warmblood mare previously diagnosed with Equine Herpesvirus Myeloencephalopathy on April 21, 2017, no additional cases have been identified at the Sacramento County premises. On May 5, 2017 the premises was released from quarantine. Currently there are no quarantines for Equine Herpesvirus in the state of California.

May 04, 2017 Strangles Golden, CO Confirmed case(s): Quarantine

Fifty eight horses and 28 ponies out of a herd of 230 at Fort Westernaires in Jefferson County, Colorado have been diagnosed with Strangles. All horses in the herd are quarantined and the affected horses are being treated. The Jefferson County Fairgrounds is not quarantined.

April 28, 2017 Equine Herpes Viruses Sacramento, CA Confirmed case(s): Quarantine
Source: California Department of Food and Agriculture

April 28, 2017: A 15 year old Warmblood mare in Sacramento County displaying severe neurologic signs was confirmed positive for Equine Herpesvirus-1 (EHV-1). The mare initially showed  signs of colic on Friday April 21st and was transported to a veterinary clinic for veterinary care. While in isolation at the veterinary clinic, the mare started displaying neurologic signs, became recumbent and was subsequently euthanized. Quarantine was immediately implemented at the home premises. Because this horse meets the case definition for an Equine Herpesvirus Myeloencephalopathy (EHM)  CDFA issued a quarantine for 31 exposed horses which requires implementation of biosecurity measures including twice daily temperature taking and clinical observation of the horses. No exposed horses have displayed signs of disease. CDFA continues to monitor the situation onsite. Go to https://www.cdfa.ca.gov/ahfss/animal_health/equine_herpes_virus.html