A dead crow found in Marathon County has tested positive for West Nile virus according the Marathon County Health Department.
It is the first bird to test positive for the mosquito-transmitted virus since the county began tracking it in May.
Birds in 23 counties have tested positive for the virus in 2016 including Lincoln, Langlade, Shawano, Portage and Clark.
West Nile virus is transmitted to humans through mosquitos, who get the virus from feeding on infected birds.
“The positive bird means that residents of Marathon County need to be more vigilant in their personal protective measures to prevent mosquito bites,” said Marathon County Health Officer Joan Theurer.
The majority of people who are infected with West Nile virus don’t get sick and less than 1% of people infected with the virus get seriously ill.
Symptoms include: fever, headache, muscle ache, rash and fatigue.
People who are seriously ill may experience high fever, muscle weakness, stiff neck, disorientation, mental confusion, tremors, confusion, paralysis, and coma.
To report a sick or dead bird call the Dead Bird Reporting Hotline at 1-800-433-1610