Animal health officials in California and Minnesota have confirmed new cases of West Nile virus (WNV) in horses in those states.
In California, two cases were confirmed on Aug. 19. A statement from the California Department of Food and Agriculture (CDFA) said the horses—a 2-year-old unvaccinated Quarter Horse gelding in Calaveras County and am 18-year-old unvaccinated gelding in Ventura County—were both displaying neurologic signs at the time of diagnosis but are recovering.
“For 2016, a total of eight horses have been confirmed positive for WNV,” the CDFA statement said. “The positive horses are located in the following counties; Fresno, Calaveras, Riverside, Sacramento, San Diego, San Joaquin, Sutter, and Ventura counties. All horses were not current on their WNV vaccinations. Two of the eight positive confirmed horses were euthanized.”
Meanwhile, in Minnesota, the equine WNV case count has risen to seven. The state Board of Animal Health provided at list of confirmed cases in the state thus far in 2016:
- Winthrop, Sibley County—Confirmed Aug. 2—A 1.5-year-old Friesian stallion was euthanized on Aug. 5 due to progression of the disease; he was not vaccinated.
- Milaca, Mille Lacs County—Confirmed Aug. 3—A draft-cross stallion is receiving supportive care and is able to stand, eat, and drink on his own; he was not vaccinated.
- Bertha, Todd County—Confirmed Aug. 9—A 6-year-old Standardbred gelding was euthanized on July 30 due to disease progression; he was not vaccinated.
- McIntosh, Polk County—Confirmed Aug. 12—A 4-yea