International Breeders' Meeting
INTERNATIONAL COLLATING CENTRE
Animal Health Trust
Information Exchange on Infectious Equine Disease
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Interim Report – September 2016 #15 (29.9.16)
West Nile Virus (WNV) – Encephalitis
Additional cases of WNV– Encephalitis have been reported from Minnesota, Oklahoma, and Washington. Two more cases have been diagnosed from Washington state. A six month-old Quarter horse filly without any history of vaccination was confirmed positive in Spokane County. The filly’s condition is improving. A second case involved a 10 year-old Quarter horse mare in Stevens County. Vaccination history unknown. This animal is also recovering. Minnesota has confirmed the seventeenth case of WNV - Encephalitis in 2016. The affected animal was an 18 year-old Quarter horse mare in Olmstead County. The mare which had not been vaccinated against, WNV - Encephalitis is making a recovery.
The third state to report cases of WNV - Encephalitis is Oklahoma. The first case was in a yearling Quarter horse stallion in Grant County, vaccination history unknown. The second case involved a yearling Quarter horse filly in McClain County. It exhibited severe neurological signs and had to be euthanased. Vaccination history unknown. The latest cases bring the state’s total for the year to five.
Minnesota has confirmed the eighteenth case of WNE in the state this year. A 14-15 year old Quarter horse mare in Hennepin County was found recumbent at pasture, unable to right itself. The mare had been vaccinated five days before becoming ill. There was no prior vaccination history. In light of her clinical condition, the mare was euthanized on humane grounds.
Eastern Equine Encephalomyelitis (EEE)
The state of Wisconsin has reported five new cases of EEE since 23rd September. Details of the cases are as follows: the disease was confirmed in an unvaccinated, eight-year-old Saddlebred mare in Forest County. It presented with fever, ataxia and blindness, later becoming unresponsive and having to be euthanased. The second case was in a four year-old Quarter horse gelding from Lincoln County. It presented with occasional paddling, seizures, ataxia, grinding of the teeth, cortical blindness and exaggerated eye responses. It too became unresponsive and had to be euthanased. A third case involved an 18 year-old Quarter horse mare also from Lincoln County of dubious vaccination history. The mare exhibited ataxia, teeth grinding and blindness. She was minimally responsive and was euthanased. A further case was in an unvaccinated eight-year –old grade gelding in Clark county. It became recumbent and unresponsive; it died despite treatment. A fifth case was in a 12 year-old grade stallion from Langlade County. It was recumbent at time of presentation, depressed and listless. He failed to show improvement and died. The sixth and final case involved an eight year-old Standardbred mare from Waupaca County. She displayed ataxia, nystagmus, became unresponsive and died. The latest cases in Wisconsin brings the states total to eleven.
International Collating Centre
International Collating Centre