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California EHV-1: Case Total Rises to Nine

January 19, 2012
Posted by Erica Larson

An additional horse was confirmed EHV-1-positive and another was euthanized in connection with the outbreak.

Topics: Article, Equine Herpesvirus (EHV), Quarantine

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One new case of equine herpesvirus-1 (EHV-1) has been confirmed and one horse has been euthanized in connection with the current outbreak in Orange County, Calif., according to a statement from the California Department of Food and Agriculture (CDFA).

The CDFA is reporting that one EHV-1-positive horse, which previously had only exhibited a fever and limb edema (fluid swelling), became recumbent on Jan. 18. The horse was euthanized as a result, and necropsy results are pending, the statement read.

On Jan. 11 a gelding residing on a "large multidiscipline facility with no movement of horses on or off the property" tested positive for the debilitating virus. He was quarantined on the farm and is receiving veterinary care.

On Jan. 12 testing confirmed that two additional horses on the property were EHV-1-positive. Those horses were also isolated and quarantined on the same farm and are receiving veterinary attention. On Jan. 13, two additional horses on the premises tested positive for the virus, and on Jan. 18, three additional cases were reported

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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.