SHAWANO, WI – The Shawano-Menominee Counties Health Department is urging residents to take precautions against mosquito bites after confirming the first human case of West Nile virus (WNV) in Shawano County this year.
The case was identified in a healthy blood donor whose donation tested positive for the virus. Health officials say this confirms that infected mosquitoes are present in the area and capable of spreading the virus to both people and animals. Similar WNV activity has been reported in other parts of Wisconsin this season, including infections in people, mosquitoes, and animals.
Most people infected with West Nile virus never develop symptoms, but about 20 percent experience mild illness, including fever, headache, muscle aches, rash, and fatigue. Fewer than 1 percent of cases lead to serious complications such as high fever, muscle weakness, disorientation, paralysis, or coma. Older adults and those with weakened immune systems are at greater risk of severe illness or death.
Health officials recommend taking steps to prevent mosquito bites and limit mosquito breeding around homes. Suggested precautions include using insect repellents with DEET, picaridin, oil of lemon eucalyptus, or IR3535; wearing long sleeves and pants outdoors; repairing window and door screens; and removing standing water from containers, gutters, bird baths, and other areas where mosquitoes can breed.
Mosquito activity is expected to continue until the first hard frost of the season, and officials urge residents to remain vigilant. Anyone experiencing symptoms consistent with West Nile virus should contact their healthcare provider.
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