To date, CCDPH officials report one death, two human cases, 269 mosquito pools and five birds with West Nile virus throughout suburban Cook County. These numbers do not include Chicago, Evanston, Skokie, Stickney Township or Oak Park as these communities have their own state certified local public health departments.
Most people infected with WNV have no symptoms of illness and never become ill. But illness can occur 3-15 days after an infected mosquito bite and cause symptoms of fever, headache and body aches. The disease can affect all ages, but people over the age of 50 and those with a chronic disease, such as heart disease or cancer may be at risk for serious complications from encephalitis or meningitis. For that reason, people who experience high fever, confusion, muscle weakness, severe headaches, or a stiff neck should see a doctor immediately.