Twenty-one of the cases of West Nile virus (WNV) in horses were handled and treated by the Mattituck-Laurel Veterinary Hospital, in Laurel, N.Y. Of those 21, eight have died or were euthanized. An additional horse, a Thoroughbred, might be euthanized tonight, following intensive exam by the United States Department of Agriculture.

John E. Andresen, DVM, is the equine specialist at the animal hospital, which he co-owns with Charles Timpone, DVM. Andresen’s practice includes several thousand horses which are active in many disciplines of equine sport