May 13, 2022: The Centers for Disease Control and Prevention listed six Connecticut Counties in the High/Orange category as part of its COVID-19 Community Levels Map. Only Fairfield and New London Counties are listed in the Medium/Yellow category. Residents in these counties should wear a mask indoors in public; stay up to date with COVID-19 vaccines and get tested if they have symptoms. Additional precautions may be needed for residents who are at high risk for severe illness. Visit the CDC COVID-19 Community Levels Map for updates.


Aedes aegypti and Aedes albopictus


Dengue virus is spread to people through the bite of infected mosquitoes. This disease is not spread in Connecticut; however, residents can acquire it by traveling to foreign endemic areas. Dengue is found in Central and South America, Southeast Asia and the Pacific islands, and in Puerto Rico. In Connecticut, surveillance is conducted to identify travel-related cases. There is no vaccine to prevent or medicine to treat dengue virus infection. The best way to prevent getting sick from dengue virus is to prevent mosquito bites.


About Dengue

Where Has Dengue Been Found?

National Statistics and Maps


Traveler’s Health

Travel & Dengue

Prevent Bug Bites


Information for Clinicians


Letter from the Centers for Disease Control and Prevention    

(Dengue and Zika Virus Diagnostic Testing for Patients with a Clinically Compatible Illness and Risk for Infection with Both Viruses)

Clinical Guidance

National Surveillance Case Definition


Connecticut Provider Reporting Information

Reportable Disease Confidential Case Report form, PD-23

Connecticut Laboratory Reporting Information

Reportable Laboratory Findings form, OL-15C


Directory of Clinical Testing Services provided by the State Public Health Laboratory

State Public Health Laboratory Contacts – for additional information


Dengue Clinical Case Management course – 4 CME, .4 CEU


Connecticut Dengue Surveillance

Dengue fever was added to the state-wide reportable diseases list in 2011. In Connecticut, surveillance is conducted to identify travel-related cases. Since 2011, an average of 9 cases (range 1 to 18) have been reported to the Connecticut Department of Public Health annually.

 Connecticut Annual Infectious Diseases Statistics




This page last updated 5/22/2020.