California
WNV transmission occurs when infected mosquitoes feed on animals, as well as humans, after having fed on infected birds. | Photo: iStock
On Sept. 24, California Department of Food and Agriculture (CDFA) officials confirmed the state’s 13th case of West Nile virus (WNV). The affected horse, a vaccinated 8-year-old Quarter Horse stallion in Kings County, began showing neurologic signs on Sept. 17. Those signs included fever, ataxia (loss of muscle control), and recumbency (down and unable to rise). The horse is reported as affected and alive.

The state’s WNV cases include the following counties:

  • Amador (1)
  • Butte (1)
  • Glenn (1)
  • Kings (1)
  • Merced (1)
  • Riverside (2)
  • San Bernardino (1)
  • San Joaquin (2)
  • Stanislaus (3)

Ten horses have survived; one died; and two were euthanized.

About West Nile Virus

WNV transmission occurs when infected mosquitoes feed on animals, as well as humans, after having fed on infected birds

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