Precautions recommended after two horses in the state infected with Eastern equine encephalitis
DHS
The Wisconsin Department of Health Services (DHS) urges people to continue to take steps to prevent mosquito bites after two horses in the state tested positive for Eastern equine encephalitis virus (EEE). The Department of Agriculture, Trade, and Consumer Protection (DATCP) announced a case in Marathon County yesterday, and then confirmed another case in Clark County. This is evidence mosquitoes are present in the state that can spread EEE to animals and people.
EEE is a rare but serious disease. One human case of EEE was reported in Wisconsin earlier this year, but they most likely acquired their infection during travel to another state. EEE virus spreads to humans, horses, and other animals through the bite of an infected mosquito. Mosquitoes acquire EEE by feeding on infected birds. The virus is not spread person to person, directly between animals, or between animals and humans.
Some people with EEE may develop fever, headache, chills, and vomiting. The illness may become severe resulting in encephalitis (inflammation of the brain), disorientation, seizures, coma, or death. About 30% of people who develop severe EEE disease will die, and those who do survive often have long-term neurologic problems. Adults over 50 years old and children under 15 years old are at the greatest risk for developing severe EEE. There is no specific vaccine or treatment for EEE available for people.
Since EEE is known to be circulating in Wisconsin, residents and visitors should take steps to reduce exposure to mosquitoes and eliminate mosquito breeding sites. Mosquito activity and the risk of EEE, West Nile virus, and other diseases spread by mosquitoes will continue into the fall until there is a hard frost (temperatures below 28 degrees Fahrenheit for at least four straight hours). DHS encourages Wisconsinites to protect themselves against mosquito bites.
Avoid mosquito bites
Apply an insect repellent with DEET, picaridin, oil of lemon eucalyptus, or IR3535 to exposed skin and clothing.
Treat clothing with permethrin prior to heading outdoors. Do not apply permethrin directly to skin.
Consider rescheduling outdoor activities that occur during evening or early morning hours, when mosquitoes are most active.
Wear long sleeves, long pants, and socks when outdoors to help keep mosquitoes away from skin.
Mosquito-proof your home
Find more information about EEE, other illnesses that can be spread by mosquitoes, and ways to protect against illness on the DHS website.
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