SPRINGFIELD, Ill. – The Illinois Department of Health (IDPH) reported its first mosquito pool in the state, testing positive for West Nile Virus (WNV).

IDPH says the results came in yesterday, May 12.

These reports—coming from the city of Rockford in Winnebago County—are also the first time the virus was reported this year. 

“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.

Vohra said it’s important for individuals to prevent the chances of sustaining mosquito bites, especially those who have a weaker immune system. 

WNV is transmitted from a Culex mosquito bite, also known as house mosquitoes. Most WNV symptoms include fever, upset stomach, headache and muscle aches. However, there are chances someone may not show any symptoms.

One practice Vohra suggested to combat the virus surrounds the three R’s: reduce, repel and report.

In 2024, the state of Illinois saw 69 human cases in relation to WNV, and about 13 people died from the virus.

More information about WNV can be found on the health department’s website here.