The California Department of Food and Agriculture (CDFA) released the equine herpesvirus-1 (EHV-1) quarantines in San Joaquin and Riverside counties on June 30.

The department reported June 16 that a 12-year-old Quarter Horse gelding and a 12-year-old mule, both from Riverside County, attended Mule Days in Bishop, California, which took place May 17-26.

“After returning home, the Quarter Horse gelding spiked a fever of 106°F on May 30 and exhibited neurologic signs on June 4 and confirmed positive for … EHV-1,” the statement said. “The 12-year-old mule never spiked a fever and began coughing on June 2 but showed no other clinical signs.”

The statement also said that an 8-year-old Quarter Horse gelding who did not attend Mule Days, but was a cohort to the other Quarter Horse gelding, developed a high fever and severe hind limb ataxia (incoordination) on June 4

Create a free account with TheHorse.com to view this content.

TheHorse.com is home to thousands of free articles about horse health care. In order to access some of our exclusive free content, you must be signed into TheHorse.com.

Start your free account today!

Already have an account?
and continue reading.