The Health Department encourages residents to use common sense and take precautions to avoid mosquito and tick bites when enjoying the outdoors. 

Important Mosquito Information

Wellesley is part of the East Middlesex Mosquito Control Commission and conducts testing for mosquito-born illnesses such as West Nile Virus (WNV) and Eastern Equine Encephalitis (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.

Questions and concerns about WNV or EEE can be directed to the Massachusetts Dept. of Public Health (MDPH) 24-hour hotline at 617-983-6800.

 Health Department information:

• Massachusetts EEE/WNV risk map
• Town of Wellesley Mosquito fact sheet (last updated 9-2019)
• MDPH EEE fact sheet
• EEE prevention handout 
• EEE website from MDPH
• Information on Anvil 10+10 (sumithrin or d-phenothrin) pesticide