MDPH 8/30-8/31 No EEE Spraying

Published August 27, 2019 | Health Department | Updated September 4, 2019 | Automatically Archived on 9/4/2019

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UPDATE 8/30/19- 8/31/19:

MDPH has no spraying scheduled for Sudbury at this time. We urge all residents to take precautions to avoid EEE health risks.



UPDATE 8/29/19:

The aerial mosquito spraying was completed early Wednesday morning (August 28th). The final MDAR spray map can be found here- 

UPDATE 8/27/19:

Aerial mosquito spraying was conducted as planned in parts of the spray zone in Worcester and Middlesex counties overnight on Monday, August 26.

Aerial mosquito spraying is expected to continue starting at 7:30 p.m tonight, Tuesday, August 27 (weather dependent) in areas that were not sprayed last night. The map indicates sections of Sudbury were not sprayed. Spraying will continue, as needed, on additional nights until completion of the spray zone. Link to safety precautions:

The MDAR/MDPH will update the spray map daily. Please keep in mind that map preparation takes time and may result in some delays in posting.

Although the aerial spray is considered necessary to reduce human risk, it will not eliminate it. Residents must continue to protect themselves from mosquito bites by staying indoors during peak mosquito hours, applying insect repellent when outdoors, draining standing water where mosquitoes breed, and repairing screens in doors and windows. Residents should also take steps to protect their domestic animals from mosquito bites.


UPDATE 8/26/19: Due to weather conditions last night (Sunday, August 25th) in Worcester and Middlesex counties, aerial mosquito spraying could not be conducted.

MDAR expects weather conditions to be favorable for aerial mosquito spraying to begin this evening (weather-dependent) starting at 7:30 p.m. and continuing over several evenings.


Although EEE still hasn’t been found in Sudbury, it has been found close by and is continuing to spread. The state and municipalities are making every effort to reduce risk. Please see attachment below for dates, health risks, precautions and  links to pertinent government websites.

The updated spray map can be found here.

  • The map is searchable by address—residents can enter their address to determine if their address is in the spray zone.
  • The map will be updated each day to reflect the last evening’s spray area. Please note map preparation takes time and may result in some delays in posting.

Click here for latest updates on spraying.

Frequently asked questions about EEE and Precautions for prevention and spraying

Precautions with Animals

Dusk to Dawn Hours – Table

Important! – Protect Yourself