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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.


April 25, 2018
Strangles
Ionia County, MI
Confirmed Case(s): No Quarantine
Source: Michigan Department of Agriculture and Rural Development

The Michigan Department of Agriculture and Rural Development has confirmed strangles in a nine-year-old Quarter Horse mare from Ionia County. The mare developed nasal discharge, fever, and a cough and is recovering under the care of a veterinarian. No quarantines were issued. This case brings the total number of confirmed strangles cases in Michigan for 2018 to three.

April 24, 2018
Equine Herpes Viruses
Bowman County, ND
Confirmed case(s): Official Quarantine
Source: North Dakota Department of Agruculture

The North Dakota Department of Agriculture has confirmed Equine herpesvirus myeloencephalopathy (EHM) in a Bowman County barrel-racing horse. The horse became notably ill on Thursday, April 19th . The disease rapidly progressed, resulting in euthanization that same day. Confirmatory lab results were received on April 20th. Horses that were exposed to the positive horse within 72 hours prior to the onset of clinical illness have been quarantined. Owners of other horses that may have had contact with the affected horse prior to that period are being advised to consult with their local veterinarian, monitor their horses and restrict travel. For more information go to https://www.nd.gov/ndda/news/ehm-confirmed-bowman-county-horse 

April 24, 2018
Equine Herpes Viruses
Orange County, CA
Outbreak Update
Source: California Department of Food and Agriculture

The California Department of Food and Agriculture has confirmed three additional EHV-1 positive horses at the quarantined facility in Orange County. Two horses displaying fevers over the weekend were confirmed positive on April 23rd and moved to isolation. An additional horse which had originally tested negative for EHV-1 after developing a fever was sampled a second time, was confirmed positive on April 24th, and was also moved into isolation. This brings the total of confirmed EHV-1 febrile cases to five and one confirmed case of EHM. Enhanced biosecurity measures and twice daily temperature recording for all exposed horses in the quarantine barn continues. CDFA staff continues to be onsite monitoring the situation.

April 20, 2018
Equine Herpes Viruses
Orange County, CA
Outbreak Update
Source: California Department of Food and Agriculture.

The California Department of Food and Agriculture confirmed two new cases of EHV-1 in the previously quarantined barn in Orange County on April 18th, 2018. A mare displayed a fever the morning of April 17,2018 and a horse which was febrile for one day on Sunday, April 8th. Both horses have been placed in separate quarantine isolation stabling on the property. An additional horse displaying a fever on April 18, 2019 tested negative for Equine Herpesvirus-1. The horse will be retested to confirm negative status. Exposed horses under quarantine continue to be monitored with twice daily temperature recordings. CDFA staff continues to be onsite to monitor the situation. For more information go tohttps://www.cdfa.ca.gov/ahfss/animal_health/equine_herpes_virus.html

April 20, 2018
Equine Herpes Viruses
Cherokee County, GA
Confirmed case(s): Official Quarantine
Source: Georgia Department of Agriculture

On April 17, 2018, the Georgia Department of Agriculture (GDA) confirmed EHV-1 in a miniature mule exhibiting respiratory signs in Cherokee County. GDA has placed the facility under quarantine. The mule died due to complications related to pneumonia. Other equids that may have come into contact with the affected mule are being monitored and are currently not showing clinical signs of the disease.

April 20, 2018
Equine Herpes Viruses
Weld County, CO
Confirmed case(s): Official Quarantine
Source: Colorado State Veterinarian’s Office

On April 18, 2018, the Colorado State Veterinarian’s Office confirmed Equine Herpesvirus Myeloencephalopathy (EHM) in a horse exhibiting neurological clinical signs in Weld County. The Colorado Department of Agriculture has placed the facility under quarantine, and facility management has voluntarily suspended all activities at the premises. The horse is undergoing treatment and is recovering. Other horses that may have come into contact with the affected horse are being monitored and are currently not showing clinical signs of the disease.

April 19, 2018
Equine Herpes Viruses
Washtenaw County, MI
Outbreak Update
Source: Michigan Department of Agriculture and Rural Development

On March 27, the Michigan Department of Agriculture and Rural Development confirmed its first case of equine herpesvirus myeloencephalopathy (EHM) for 2018 in a five-year-old Standardbred gelding from Washtenaw County. The horse was immediately quarantined off-site and 16 horses other horses were quarantined where the horse had originated. The 16 horses were monitored twice a day for fevers and sign of herpesvirus, starting the day the EHM positive horse was removed from the premises. As of April 17, the other 16 horses have had 21 consecutive days without the presence of fevers or clinical signs and have been released from quarantine. The EHM positive horse is currently recovering and being quarantined at a separate premises where there are no equine within 30 feet of the property.

April 18, 2018
Equine Herpes Viruses
Kennett Square, PA
Quarantine Released
Source: Pennsylvania Department of Agriculture

 

On April 17, 2018, the Pennsylvania Department of Agriculture Bureau of Animal Health and Diagnostic Services revoked the quarantine related to an EHM case at a boarding stable in Kennett Square, Chester County, PA. 

April 17, 2018
Strangles
Nassau County, FL
Confirmed case(s): Official Quarantine
Source: Florida Department of Agriculture and Consumer Services
The Florida Department of Agriculture has confimed that on April 17, one premises in Nassau County, Florida was placed under quarantine for clinical signs and a positive PCR test result for Strangles. One of the 13 horses on the property is showing clinical signs at this time. This is the first Strangles quarantine for Nassau County and the 23rd in the state of Florida in 2018.  
April 17, 2018
Eastern Equine Encephalitis
Hamilton County, FL
Confirmed Case(s): No Quarantine
Source: Florida Department of Agriculture and Consumer Services

The Florida Department of Agriculture has reported that on April 4, one horse in Hamilton County, Florida tested positive for Eastern Equine Encephalitis (EEE). The unvaccinated 17 year old Welsh Pony became clinical on April 3 and was humanely euthanized on April 4 due to a poor prognosis.