2023 Mosquito Season

Eastern Equine Encephalitis (EEE) Virus
Fact Sheet - English
Fact Sheet - Spanish
Easy-Read Version (on State webpage)

The West Nile Virus is another disease mosquitoes can carry and should not be overlooked. 

West Nile Virus
Fact Sheet - English
Fact Sheet - Spanish
Easy-Read Version (on State webpage)

Did you know?  The State Department of Public Health in collaboration with the State Reclamation and Mosquito Control Board and local Mosquito Control Districts conducts surveillance for mosquito-borne viruses through mosquito traps set throughout Massachusetts. 

Surveillance (Arbovirus) data for 2023 will be updated accordingly on the State website, weekly, beginning sometime in June through October (See below)

EEE and WNV Risk Map Icon with link

Protect Yourself

Apply Insect Repellent When OutdoorsDoes your repellent contain an EPA-registered ingredient like (Examples include; *DEET, *Permethrin, *IR3535, *Picaridin, *Oil of Lemon Eucalyptus).
Warning: DEET products SHOULD NOT be used on infants under 2 months. 
                  For children older than 2 months, DEET concentrations of 30% OR LESS should be used.
Warning: Oil of Lemon Eucalyptus should not be used on children under three years of age.

Be Aware/Avoid Peak Mosquito HoursMosquitoes are most active between dusk and dawn.
Use Clothing As ProtectionWearing long-sleeves, long pants and socks when able, helps to limit exposed skin available for biting.
Drain Standing Water Around Your YardDon't let mosquitoes have a good place to lay their eggs.
Install/Repair ScreensBy installing and repairing screens, that will keep mosquitoes OUT.

View the State's Preventing Mosquito Bites brochure for more on protecting yourself, your family and your animals.

View the State's insect repellant fact sheet.