Press Releases
08/31/2023
West Nile Virus Update: Positive Mosquitoes Found in 25 Connecticut Towns
MEDIA CONTACTS:
Dr. Philip Armstrong
The Connecticut Agricultural Experiment Station
123 Huntington St.
New Haven, CT 06511
Phone: 203-974-8510 Email: philip.armstrong@ct.gov
Dr. Jason White
The Connecticut Agricultural Experiment Station
123 Huntington St.
New Haven, CT 06511
Phone: 203-974-8440 Email: jason.white@ct.gov
New Haven, CT – The Connecticut Agricultural Experiment Station (CAES) has identified West Nile virus (WNV) infected mosquitoes in 25 Connecticut towns this season: Branford, Bridgeport, Colchester, Danbury, Darien, East Haddam, East Haven, Fairfield, Greenwich, Hartford, Hebron, Killingworth, Manchester, Mansfield, New Canaan, North Stonington, Norwalk, South Windsor, Stamford, Wallingford, Waterbury, Waterford, Wethersfield, Willington, Wilton. One human case of WNV infection has also been reported in Connecticut so far this year.
“We continue to detect West Nile virus in mosquitoes throughout Connecticut, with the highest levels of activity in Fairfield and New Haven counties and in the metropolitan Hartford area,” said Dr. Philip Armstrong, Medical Entomologist at the CAES. “The risk of West Nile virus is expected to continue until mosquito activity ceases in October.”
“Now is the time to take precautions against mosquito bites,” said Dr. Jason White, Director of CAES. "We encourage everyone to take protective measures such as using insect repellent and covering bare skin, especially during dusk and dawn when mosquitoes are most active."
To reduce the risk of being bitten by mosquitoes, residents should:
- Minimize time spent outdoors between dusk and dawn when mosquitoes are most active.
- Consider the use of mosquito repellents containing an EPA-registered active ingredient, including DEET, Picaridin, IR3535, oil of lemon eucalyptus, para-methane-diol (PMD), or 2-undecanone when it is necessary to be outdoors.
- Wear shoes, socks, long pants, and a long-sleeved shirt when outdoors for long periods of time, or when mosquitoes are more active. Clothing should be light-colored and loose-fitting and made of tightly woven materials that keep mosquitoes away from the skin.
- Be sure door and window screens are tight-fitting and in good repair.
- Use mosquito netting when sleeping outdoors or in an unscreened structure and to protect infants when outdoors.
West Nile virus is the most common mosquito-borne viral disease in the United States and occurs every summer in Connecticut. One hundred eighty-one human cases of West Nile virus, including four fatalities, have been reported in Connecticut residents since 2000.
Connecticut Mosquito Management Program
The response to mosquito transmitted diseases in Connecticut is a collaborative inter-agency effort involving the Department of Energy and Environmental Protection (DEEP), The Connecticut Agricultural Experiment Station (CAES), the Department of Public Health (DPH), the Department of Agriculture, and the Department of Pathobiology at the University of Connecticut (UCONN). These agencies are responsible for monitoring mosquito populations and the potential public health threat of mosquito-borne diseases.
The CAES maintains a network of 108 mosquito-trapping stations in 88 municipalities throughout the state. CAES begins mosquito trapping and testing in June and continues into October. Positive findings are reported to local health departments and on the CAES website.
For information on WNV and other mosquito-borne diseases, what can be done to prevent getting bitten by mosquitoes, the latest mosquito test results, and human infections, visit the Connecticut Mosquito Management Program website.