West Nile Virus Confirmed In Marseilles, Illinois Mosquitoes

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Post on Jul 24, 2025

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West Nile Virus Confirmed in Marseilles, Illinois: Health Officials Urge Precautions

Marseilles, IL – August 28, 2024 – Local health officials have confirmed the presence of West Nile Virus (WNV) in mosquitoes collected within the Marseilles, Illinois area. This confirmation triggers a heightened alert for residents, urging them to take proactive steps to protect themselves from mosquito bites and the potential spread of this potentially serious illness.

The Illinois Department of Public Health (IDPH) and the LaSalle County Health Department announced the positive WNV test results following routine mosquito surveillance. While this is not the first instance of WNV in Illinois, its presence in Marseilles underscores the importance of community-wide vigilance and preventative measures. The exact location of the positive mosquito pool is not being publicly released to protect resident privacy, but officials emphasize that the entire Marseilles area should be considered at risk.

Understanding the West Nile Virus Threat

West Nile Virus is a mosquito-borne illness that can cause a range of symptoms, from mild flu-like illness to severe neurological complications, such as encephalitis and meningitis. While most people infected with WNV experience no symptoms or only mild ones, a small percentage develop serious illness requiring hospitalization. provides further details on the virus and its potential effects.

Protecting Yourself from Mosquito Bites:

Protecting yourself and your family from mosquito bites is the most effective way to prevent WNV infection. Here are some key recommendations from health officials:

• Eliminate Standing Water: Mosquitoes breed in stagnant water. Regularly empty and clean any containers that hold water, such as flowerpots, birdbaths, and pet water dishes. Ensure gutters are clear and functioning properly.
• Use Repellent: When spending time outdoors, apply insect repellent containing DEET, picaridin, IR3535, or oil of lemon eucalyptus (OLE) according to the product label instructions.
• Wear Protective Clothing: Dress in long sleeves and pants, especially during dawn and dusk when mosquitoes are most active.
• Repair Screens: Make sure window and door screens are in good repair to prevent mosquitoes from entering your home.
• Limit Outdoor Activities at Dusk and Dawn: Mosquitoes are most active during these times. If you must be outside, take extra precautions to avoid bites.

What to Do if You Suspect a WNV Infection:

If you experience symptoms such as fever, headache, body aches, joint pains, vomiting, diarrhea, or rash, particularly after a potential mosquito bite, contact your healthcare provider immediately. Early diagnosis and treatment are crucial in managing WNV infection.

Community Collaboration is Key:

The LaSalle County Health Department is working closely with the community to control mosquito populations and prevent the further spread of WNV. This includes mosquito control measures such as larviciding and adulticiding in affected areas. However, community participation is vital. By following the preventative measures outlined above, residents can significantly reduce their risk of infection and contribute to a healthier community.

Stay Informed:

For updates and further information on West Nile Virus activity in Marseilles and LaSalle County, visit the LaSalle County Health Department website [Insert Website Link Here] and the Illinois Department of Public Health website [Insert Website Link Here]. Regularly checking these resources will keep you informed about any new developments and recommendations. Staying vigilant and proactive is the best defense against West Nile Virus.