This is the ninth confirmed case of equine WNV in Ontario this year.
On October 8, an unvaccinated Standardbred mare in LaGrange County, Indiana, tested positive for West Nile virus (WNV) after developing clinical signs on September 23, including ataxia and muscle ...
On October 10, two Paint mares in Dufferin County, Ontario, tested positive for West Nile virus (WNV). The mares, who are unvaccinated, share a paddock and developed severe ataxia on September 29.