A Racine County, Wisconson, horse has tested positive for West Nile virus. The Caledonia and Mount Pleasant Health Department says it’s the first documented case this year of the mosquito-borne disease in Racine County. Health officer Margaret Gesner says the 5-year-old Welsh pony was euthanized Sept. 16.

In order to help horse owners better understand this disease, host TheHorse.com and sponsor Intervet presented an educational Webinar on Tuesday, Oct. 2, 2007, at 2 p.m. EDT, on “Understanding West Nile Virus.” To watch the archived webinar immediately, see the Video Library.