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SR horse dies of West Nile

 Press Demo logo
Friday, September 17, 2004; B1, B2

SR horse dies of West Nile

Southwest-area equine first in county, third on North Coast to contract mosquito-borne virus

By TIM TESCONI
THE PRESS DEMOCRAT

    A horse from southwest Santa Rosa is dead after contracting West Nile virus, the first horse in Sonoma County to die from the disease and the third horse on the North Coast to be infected with the mosquito-transmitted virus.
    Officials on Thursday confirmed that the 17-year-old quarter horse was infected with West Nile, which is often fatal to unvaccinated horses.
    On Monday the severely ill horse was examined by a veterinarian who suspected West Nile and sent a blood sample to the state Department of Food and Agriculture.
    Thursday, agriculture officials reported the horse tested positive for the virus, which arrived in Sonoma County this summer.
    The horse was euthanized Wednesday because it was so sick from the disease, which causes inflammation of the brain. Symptoms are partial paralysis, staggering, neurological disorders and grinding of teeth.
    The veterinarian determined there was little chance the horse would recover and ended the animal's suffering.
    ``Horses are very susceptible to this virus and it hits them really, really hard,'' said Chris Canterbury, public relations officer for the Marin/Sonoma Mosquito & Vector Control District.
    The Santa Rosa horse had not been vaccinated, said Leigh Hall, deputy public health officer for Sonoma County.
    Last week, two horses, one in Lake County and the other in Mendocino County, were diagnosed with West Nile, the first cases in the North Coast horse population. Those horses are expected to recover.

    For more than two years, agricultural officials, veterinarians and horse industry leaders have warned Californians to vaccinate their horses for West Nile. It's estimated that more than 90 percent of Sonoma County's 14,500 horses have been vaccinated.
    It costs about $50 to $70 for two shots, which are given about four weeks apart. The vaccination is 95 percent effective if the horse gets both vaccinations.
    ``The horse would certainly have had a better chance if it had been vaccinated,'' Canterbury said of the Santa Rosa horse.
    The names of the horse's owner and the attending veterinarian were not released to local officials by the state.
    Canterbury said his agency was not informed about the exact location of the horse, only given the general vicinity of southwest Santa Rosa. He said crews from the mosquito control district will be in the southwest Santa Rosa area today to assess the mosquito problem.
    With the Santa Rosa horse, 254 horses from 24 California counties have tested positive for West Nile. Of that number, 116 horses have died or been euthanized after infection.
    According to veterinary experts at UC Davis, 30 percent of horses infected with West Nile die and 17 percent that survive have incomplete or complicated recoveries.

 

 


 

You can reach Staff Writer Tim Tesconi at 521-5289 or ttesconi@pressdemocrat.com.