State quarantines and hold orders appear to be working in limiting the spread of deadly Equine Herpesvirus 1 (EHV-1).
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Our state by state wrap of EHV-1 across western states reflects the latest report from the Animal and Plant Health Inspection Service (APHIS) of the US Department of Agriculture, dating from last Thursday.
Another full update is expected this Thursday.
The agency is collating all state information and is publishing it when the data is verified.
Information below from individual states is included where it advances the details provided by APHIS.
EHV-1 is capable of causing severe neurological symptoms in horses, which can prove fatal. However, not all horses that are infected will show neurological signs. Those that do have what is known as Equine Herpes Virus Myeloencephalopathy, or EHM.
Horses with severe neurological signs are often unable to stand and are euthanized as a consequence.
Horses in the data below, described as secondarily exposed, are those that came into contact with horses after they attended the National Cutting Horse Association Western National Championships in Ogden, Utah from April 29 to May 8.
Authorities continue to warn that the strain at the centre of the outbreak is highly contagious and can prove fatal to horses.
They urge horse owners in affected states to avoid all non-essential horse movements, at least until the extent of the outbreak is clearer.
Arizona
No update for some days. Thirty-three horses were exposed at the Ogden, Utah, cutting horse event at the centre of the outbreak. There are two confirmed cases of EHV-1 infection and one confirmed cases of the neurological form, EHM. One has been euthanized. More at above link.
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