Mosquitoes are not just annoying; they can spread diseases that are dangerous to our health. In Connecticut, mosquitoes can carry diseases like West Nile Virus, Eastern Equine Encephalitis (EEE), Jamestown Canyon Virus, and Zika Virus. Knowing how to protect yourself and others is important to prevent these illnesses.

This is the most common mosquito-borne disease in Connecticut. While many people who contract the virus do not show any symptoms, about 20% may experience mild symptoms such as fever, headache, body aches, and sometimes a rash. In severe cases, particularly among older adults and individuals with weakened immune systems, West Nile Virus can lead to serious neurological diseases such as encephalitis (inflammation of the brain) or meningitis (inflammation of the membranes surrounding the brain and spinal cord). These severe cases can result in long-term health issues or even be fatal.

West Nile Virus Fact Sheet

Protecting yourself and your community from mosquitoes and the diseases they carry is important. By taking personal steps and supporting public health efforts, you can help reduce the risk of mosquito-borne illnesses in Connecticut. Below are some tips on how to enjoy the outdoors safely.

• Use Bug Spray: Apply bug spray with DEET, picaridin, IR3535, or oil of lemon eucalyptus. Follow the instructions on the bottle and reapply as needed.
• Wear Long Clothes: When outside, especially at dawn and dusk when mosquitoes are most active, wear long sleeves, long pants, and socks. You can also treat your clothes with permethrin for extra protection.
• Use Screens: Make sure windows and doors have screens that are in good shape to keep mosquitoes out of your home.

• Get Rid of Standing Water: Mosquitoes lay eggs in standing water. Regularly empty and clean bird baths, flower pots, pet water bowls, and other containers that can collect water.
• Clean Gutters: Keep your gutters clean to prevent water from pooling.
• Take Care of Water Features: If you have ponds or water fountains, add fish that eat mosquito larvae or use mosquito dunks, which kill mosquito larvae.