Latest Mosquito Testing Results
The Connecticut Agricultural Experiment Station traps, identifies, and tests mosquitoes for encephalitis viruses.
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Connecticut Confirms First Case of Eastern Equine Encephalitis for 2023 in Emu
State Veterinarian Stresses Importance of Vaccinations to Protect Animals
DPH announces second case of West Nile virus infection this year
A second Connecticut resident has tested positive for West Nile virus (WNV) infection.
State Mosquito Monitoring Program Begins Testing for Mosquito-Borne Viral Diseases
The mosquito trapping and testing program, coordinated by the Connecticut Agricultural Experiment Station, begins June 2, 2025, and lasts until the end of October.
State Reports Expansion of West Nile Virus
The State Mosquito Management Program is warning Connecticut residents about the increasing risk of infection by West Nile virus this season.
Mosquito Season Alert-CT Horse and Livestock Owners Advised to Guard Against Mosquito-Borne Diseases
The Connecticut Department of Agriculture reminds the state’s horse and livestock community to take preventative measures to protect against mosquito-borne diseases this season.
Connecticut DPH Announces First Two Cases of West Nile Virus Infection this Year
Residents Advised to Protect Themselves and Family Members from Mosquito Bites
State Mosquito Monitoring Program Begins Testing for Mosquito-Borne Viral Diseases
Expanding Program from 92 to 108 Monitoring Sites
State Reports First Positive Mosquitoes for EEE Virus in Stonington
Continued detection of West Nile virus in mosquitoes from 7 Connecticut towns
Risk of West Nile Virus Continues Positive Mosquitoes Detected in 14 Connecticut Towns
EEE Positive Mosquitoes Detected in 2 Towns
DPH Announces Three New Cases of West Nile Virus Infection in Fairfield County
Residents Advised to Take Precautions Against Mosquito Bites Until the First Frost
DPH Announces First Connecticut Human Case of West Nile Virus Infection in 2020
Residents Are Advised to Protect Themselves and their Children from Mosquito Bites
State Reports Positive Mosquitoes for West Nile Virus in Newington
First WNV-Positive Mosquito Pools of Season
Continued Risk of West Nile Virus
The State Mosquito Management Program is warning Connecticut residents about the risk of infection by West Nile virus this season.
Risk remains elevated as The Connecticut Agricultural Experiment Station (CAES) detects the virus within mosquito pools in 34 towns this season.
Protection Against Mosquitoes Using Repellents FAQs
Frequently asked questions about how to protect yourself from mosquitoes by using repellents.
Latest Mosquito Testing Results
The Connecticut Agricultural Experiment Station traps, identifies, and tests mosquitoes for encephalitis viruses.
Human Surveillance of West Nile Virus
Surveillance includes monitoring mosquitoes, domestic animals, poultry, and humans. The Connecticut Department of Public Health provides laboratory testing of cerebrospinal fluid and blood from persons hospitalized with illnesses consistent with WNV infection.
Mosquito Control Around the Home
The best way to manage mosquitoes around the home is to eliminate standing water where mosquitoes can lay eggs. DEEP’s Wetland Habitat and Mosquito Management Program uses an integrated approach to manage mosquitoes that includes public education and cultural, biological, and chemical control methods.