Two geldings in California—one in Monterey County and one in San Diego County—have tested positive for a non-neurologic strain of equine herpesvirus-1 (EHV-1), according to a statement from the California Department of Food and Agriculture (CDFA). Published reports indicate that both horses recently attended the HITS Desert Horse Show in Thermal, Calif.

The horse in Monterey County displayed hind limb ataxia (incoordination) and was confirmed positive on March 14, the statement said.

"The positive horse has been quarantined and is under veterinary care," the statement said. "The CDFA has initiated an investigation, and owners of exposed horses are asked to take temperatures twice daily and monitor for clinical signs."

The San Diego County horse, which the CDFA reports "participated in the same large equine event" as the Monterey County horse, also displayed hind limb ataxia. He was confirmed EHV-1 positive on March 15, the statement noted

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