This page, EEE in Massachusetts, is part of

Guide EEE in Massachusetts

Information about Eastern Equine Encephalitis (EEE) and mosquito control.

Table of Contents

Aerial Mosquito Spray Map

Information about aerial spraying for emergency mosquito control is available on the 2020 Massachusetts Aerial Mosquito Spray Mapfrom the Massachusetts Department of Agricultural Resources (MDAR).

Additional information is provided in these FAQs:

EEE Risk Map

Routine mosquito testing began in June and will continue through October. The Department of Public Health in partnership with Local Mosquito Control Projects is conducting comprehensive surveillance activities.

View the latest Massachusetts EEE Risk Map to see areas at critical, high, and moderate risk.

Learn about EEE

Eastern equine encephalitis (EEE) is a rare but serious disease caused by a virus that can affect people of all ages. EEE is generally spread to humans through the bite of a mosquito infected with the virus. EEE can cause severe illness and possibly lead to death in any age group; however, people under age 15 are at particular risk. EEE does not occur every year, but based on mosquito sampling, a high risk of occurrence of human cases currently exists.

Learn more about EEE and how to protect yourself and your family in this fact sheet about EEE and download the Mosquito-borne Disease Prevention Poster.

Additional Resources for Learn about EEE

Press releases related to EEE

Contact information

For information on EEE, contact the DPH Division of Epidemiology (617) 983-6800 or visit the DPH website at

For general information on mosquito control, contact the State Reclamation and Mosquito Control Board at (508) 281-6786.

For questions regarding your area, contact your local health department.

For questions about aerial spraying, contact MDAR Crop and Pest Services at (508) 281-6786.