EHV-1 Update

June 3, 2011
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Equine Herpesvirus-1 (EHV-1) Update June 3, 2011:
The Texas Animal Health Commission (TAHC) is wrapping up the investigation of the single confirmed case of the neurologic form of EHV-1 in Ector County, Texas. After a full investigation, the available information indicated that the affected horse had not attended a public event in several months, making this most likely an isolated case.
Other horses on the premises are under movement restrictions and are being closely monitored for signs of the illness.
Regarding the Ogden, UT event, 9 of the 26 horses in Texas that attended the event remain under movement restriction. The number of cohorts (stablemates), under movement restriction has dropped from 323 to 150. Currently, there are a total of 6 premises that have been exposed.
The affected counties include: Randall, Parker, and Jack counties. At present, no Texas origin horse attending the Ogden, Utah event has been confirmed to have the neurologic form of EHV-1.
In other situations where horses have either shown signs consistent with EHV-1 or tested positive for EHV-1, movement restrictions have been put in place while additional diagnostic work is conducted by the attending veterinarian.
Positive test results or clinical signs alone do not necessarily mean that an animal is confirmed of being infected with the neurologic form of EHV-1.
The TAHC currently urges horse owners to practice good biosecurity when traveling to equine related events with their animals.
For more information please check the Texas Animal Health Commission website.

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