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. 

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 about EEE:

• Town of Wellesley Aerial Spraying press release (Sept. 10, 2019)
• Town of Wellesley Mosquito fact sheet
• MDPH Additional Aerial Spraying press release (Sept. 10, 2019)
• MDPH EEE fact sheet
• EEE prevention handout 
• EEE website from MDPH
• Arborvirus Report with Maps of EEE and WNV risk area
• Information on Anvil 10+10 (sumithrin or d-phenothrin) pesticide

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