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EHV-1 in Arizona: Two Unrelated Cases Confirmed in Maricopa County

May 13, 2019
Posted by Erica Larson

Two Quarter Horse geldings exhibited neurologic signs before testing positive for EHV-1 on May 7.

Topics: Diseases and Conditions, Neurologic Disease

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In many horses, the first or only sign of EHV-1 infection is fever, which can go undetected. | Photo: The Horse Staff

The Arizona Department of Agriculture has confirmed two unrelated cases of equine herpesvirus-1 (EHV-1) in Maricopa County horses, the Equine Disease Communication Center (EDCC) reported May 11.

In one case, a vaccinated 23-year-old Quarter Horse gelding exhibited neurologic signs of disease before testing positive on May 7, the EDCC said. He is recovering.

The gelding has no travel history over the past four weeks and has been quarantined at his home facility. The EDCC said two horses at that premises are considered exposed

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Written by:

Erica Larson

Erica Larson, former news editor for The Horse, holds a degree in journalism with an external specialty in equine science from Michigan State University in East Lansing. A Massachusetts native, she grew up in the saddle and has dabbled in a variety of disciplines including foxhunting, saddle seat, and mounted games. Currently, Erica competes in eventing with her OTTB, Dorado.