California, Tennessee EHV cases monitored | Horsetalk.co.nz

No fresh cases of equine herpesvirus-1 (EHV-1) have been reported in California, as state authorities continue to monitor an outbreak.

In all, 10 horses have tested positive for the neurological form of EHV-1 in two counties.

Eight of the horses are in Tuolomne County, with the property affected having been quarantined since September 12.

Six of the horses showed neurologic signs, while two had a fever only.

One was euthanised.

All exposed horses on the premises are still being monitored.

Owners of horses which have visited the premises during a two-week period prior to start of the outbreak have been contacted by the department and asked to isolate and monitor any exposed horses for 14 days.

In San Joaquin County, two horses weve confirmed positive for the neuropathogenic strain of EHV-1.

Both horses were exposed to the virus from September 4 to 10, 2011, while visiting the Tuolumne county premises.

One horse had neurologic signs and the other presented with a fever only.

Meanwhile, in Tennessee, the Dixie Stampede horse show remains open as workers monitor five show horses with EHV-1. The animals have been quarantined.

A quarter horse that performed at the Pigeon Forge attraction was taken to the University of Tennessee Equine Center for treatment, but had to be euthanised. The case resulted in the hospital being placed under isolation.

Two American Paints, two quarter horses and a percheron are being treated, but their symptoms are understood to be mild.