The Wisconsin Department of Agriculture, Trade and Consumer Protection reports two alpacas have died in Dunn County and a horse has been sickened by Eastern equine encephalitis (EEE). State Veterinarian Dr. Bob Ehlenfeldt says, “Horse owners who have not already had their animals vaccinated this year for EEE and other mosquito-borne diseases should take this as a warning, and those who have vaccinated should check with their veterinarians to see whether a booster is indicated.” There is no vaccine for alpacas; owners should consult their veterinarian about preventative measures.
EEE may be transmitted by mosquito bite to horses, birds, and humans. It is unusual, but not unheard of, for alpacas and other mammals to be infected. The virus is not transmitted between animals or between animals and humans. There have been no human cases in Wisconsin.
Ehlenfeldt notes it has been a hot, wet summer in northern Wisconsin, perfect for mosquitoes. In addition to vaccination, owners can take steps to reduce their animals’ exposure to mosquitoes. They should eliminate standing water by removing objects like old tires or even the folds in tarps where water collects, and frequently changing water in water troughs, bird baths and similar containers. Owners should also keep their animals insides barns if possible from dusk through dawn, when mosquitoes are most active.
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