IDPH Reports First Mosquito Pool in Illinois to Test Positive for West Nile Virus in 2025
SPRINGFIELD – The Illinois Department of Public Health (IDPH) is reporting that the first mosquito pool of the year to test positive for West Nile virus (WNV) this year was collected on May 9 in Rockford by the Winnebago County Health Department. The specimen tested positive for WNV on May 12. “The news of the first batch of mosquitos carrying West Nile virus is a reminder for Illinois residents to begin protecting themselves from diseases caused by mosquito and tick bites,” said IDPH Director Dr. Sameer Vohra. “The best defense against West Nile virus is to practice the ‘Three R’s’: reduce, repel, and report’. IDPH urges everyone, and especially those who are older or have weakened immune systems, to ‘Fight the Bite’ and protect themselves and their families from mosquitoes and the viruses they carry.” Last year in Illinois, IDPH reported that 72 counties around the state reported positive tests for WNV in mosquitos,