With the threat of Eastern Equine Encephalitis (EEE or “triple E”) declining, it is important to note that the risk is not completely gone for the season. Although mosquitoes are not killed until a hard frost occurs, they are extremely unlikely to be active when temperatures fall below 50 degrees in the evening and communities may wish to consider this information when making decisions about scheduling or cancelling planned outdoor events late in the season. At this time, Quinnipiack Valley Health District (QVHD) is supporting town officials, Board of Education and/or other organizations to return to their regularly scheduled outdoor activities with the precautions bulleted below and their knowledge of mosquitos in the area of activity. 

Based upon updated information from the Connecticut Department of Public Health (DPH) and the Connecticut Agricultural Experiment Station (CAES), Leslie Balch, Quinnipiack Valley Health District (QVHD) Director of Health, has indicated that mosquito-borne diseases are lower due to colder weather approaching our area. The mosquito breeding season is over, and the overall number of mosquitos has decreased. However, residents should continue to take precautionary measures that prevent mosquito bites — especially on warmer days. QVHD strongly urges residents to continue to take personal precautions for prevention of EEE and other mosquito-borne illnesses until the first hard frost. People should consider minimizing their time outside after dusk when mosquitoes are out feeding.  If anyone needs to be outside, take precautions by wearing protective clothing and using insect repellant and follow the recommendation below:

  • Use insect repellent when going outside at dawn and dusk and follow instructions for application.
  • Wear tightly-woven light, colored clothing, including long pants, socks, and long-sleeved shirts.
  • Keep door and window screens closed and in good repair.
  • Eliminate standing water.
  • Use mosquito netting for strollers and camping tents.

QVHD will continue to monitor mosquito activity and DPH/CAES updates and information. Questions on EEE can be directed to QVHD at 203-248-4528. Contact the managing organization with questions specific to the scheduling of their activities now that the recommendation of evening restriction is removed.

( and other online resources such as Weather Underground (

Announcement Date: 
Tuesday, October 15, 2019