Eastern equine encephalitis has struck again in northwest Wisconsin, two years after a major outbreak that killed at least 42 horses (see article #2852), prompting the acting state veterinarian to urge horse owners again to vaccinate and re-vaccinate their animals.

Tests at the Wisconsin Veterinary Diagnostic Laboratory and the National Veterinary Services Laboratory showed that an 8-year-old Belgian mare died in Turtle Lake on July 26 from the mosquito-borne Eastern equine encephalitis (EEE). The horse had been vaccinated for EEE two days earlier, after another horse on the same farm had died. That horse was not tested. Two remaining horses on the farm are well so far