The Arizona Department of Agriculture has reported two separate cases of neurologic equine herpesvirus in Maricopa County, Arizona.

On the first premises, a 23-year-old Quarter Horse gelding was confirmed on May 7. The horse had been vaccinated and is alive. He had no travel history over the last four weeks and has been quarantined. Two other horses were exposed on that premises.

On the second premises, a 5-year-old Quarter horse gelding had onset of clinical signs on May 7 that included ataxia and weakness. He was confirmed positive for neurologic herpesvirus on May 7 and is recovering. The gelding had not been vaccinated. The gelding had acute onset of neurologic signs and had no travel history.

Information for this report was supplied by the Equine Disease Communication Center.