Mosquitoes trapped in Colchester test positive for eastern equine encephalitis
The late-season finding is the first detection of the rare but often deadly virus in Connecticut mosquitoes in 2026, state officials said Friday.
COLCHESTER, Conn. — Mosquitoes trapped in Colchester on Oct. 14 tested positive for eastern equine encephalitis virus, the state's Mosquito Management Program said Friday.
The results are the first EEE-positive mosquitoes the Connecticut Agricultural Experiment Station has identified in the state in 2026, according to the program. The mosquitoes were Culex pipiens, a species that mostly bites birds.
"Although the weather has cooled and mosquito populations are declining to low levels, the late season detection of EEE virus in eastern Connecticut warrants attention," said Dr. Philip Armstrong, chief scientist at the experiment station. He said residents should keep guarding against bites, especially during unseasonably warm weather.
Public Health Commissioner Dr. Manisha Juthani said EEE is rare but serious, and that "the risk of human infection, while low, is not zero until we have a hard freeze." The Department of Public Health urged residents to use an EPA-registered repellent, cover bare skin outdoors at dusk and dawn, and keep window and door screens in good repair.
EEE is the most severe mosquito-borne disease in the United States, according to the state. About 40 percent of people infected die, and half of survivors suffer significant brain damage. The country typically sees four to eight human cases a year; the last major outbreak, in 2024, involved 19 cases nationally, the release said.
The experiment station runs 108 mosquito-trapping stations in 88 municipalities, trapping and testing from June into October. Positive results are reported to local health departments.
This brief was drafted by AI from a public agency or political press release and published by The New England Signal. Why we use AI for stories like this one.