UPDATE: August 20, 2020

A mosquito sample collected in Wellesley has been identified as positive for West Nile Virus (WNV). The Massachusetts Department of Public Health (MDPH) has raised the WNV risk level in Wellesley to MODERATE. The Health Department encourages residents to use common sense and take precautions to prevent mosquito (and tick bites) when enjoying the outdoors, avoid outdoor activities between dusk and dawn, drain standing water, and install or repair screen doors and windows. Please see the Mosquito Fact Sheet below for more information. 

Experts are predicting another active year for mosquitoes that may carry diseases such as West Nile Virus (WNV) and Eastern Equine Encephalitis (EEE).

Important Mosquito Information

Wellesley is part of the East Middlesex Mosquito Control Commission and conducts testing for mosquito-borne illnesses such as WNV and EEE throughout peak periods during the year. 

Visit the Commonwealth of Massachusetts website for data on mosquito-borne diseases, tick information and other resources for residents.

 Health Department information:

• West Nile Virus Information
• Massachusetts EEE/WNV risk map
• Town of Wellesley Mosquito fact sheet (updated 8-5-2020)
• EEE prevention handout
• EEE website from MDPH
• Information on mosquitoes from the CDC