Eastern Equine Encephalitis
Eastern Equine encephalitis virus (EEEV) is spread to people through the bite of infected mosquitoes. EEEV is rare in the United States with an average of 7 cases reported each year. The virus is found in mosquitoes in Connecticut. There is no vaccine to prevent or medicine to treat EEEV infection. Approximately one third of people who become sick from EEEV will die from the illness. Early recognition and prompt supportive treatment can lower the risk of complications and death. The best way to prevent getting sick from EEEV is to prevent mosquito bites.
Information for Clinicians
Directory of Clinical Testing Services provided by the State Public Health Laboratory
State Public Health Laboratory Contacts – for additional information
Connecticut EEEV Surveillance
In 2000, encephalitis was added to the state-wide reportable disease list, which included Eastern Equine encephalitis (EEE). During 2003-2018, there was one case of EEE reported to the Connecticut Department of Public Health. Mosquitoes that can spread EEE are found in Connecticut.
Connecticut Agricultural Experiment Station
The Connecticut Agricultural Experiment Station conducts mosquito trapping and tests for viruses including EEEV during June to October each year.
Vector-borne Disease Symposium- Symposium of Mosquito-Borne Disease in Connecticut, held on April 11, 2019.
Workplace Safety - Mosquito-Borne Diseases NIOSH
Page last updated 7/27/2020.