Health and Fitness First West Nile Virus Positive Mosquitoes in Northern Illinois Reported Today by Gary Kopycinski on July 1, 2011 Gary Kopycinski Author More in Health and Fitness: On Hantavirus, Park Forest Officials Urge Caution May 18, 2026 Rep. Kelly Condemns FDA Approval of Flavored E-Cigarettes May 6, 2026 Park Forest Aligns With Illinois Guidance on Childhood Vaccines Amid Federal Changes January 11, 2026 SPRINGFIELD, Ill.–(ENEWSPF)–June 29, 2011. Dr. Damon T. Arnold, state public health director, today announced mosquitoes collected in Cook and Kendall counties are the first positive West Nile virus test results in northern Illinois this year.