COVID-19 Community Levels Map Update, Jan. 27, 2023: The CDC has listed three Connecticut Counties—Litchfield, Middlesex and New Haven Counties—in the High/Orange category as part of its weekly COVID-19 Community Levels update. Fairfield, Hartford, New London, Tolland and Windham Counties are listed in the Medium/Yellow category.  Because all eight Connecticut counties are either in the High or Medium categories, the Connecticut Department of Public Health recommends that all residents consider wearing a mask in public indoor spaces. People who are at high risk for severe illness should consider additional measures to minimize their exposure to COVID-19 and other respiratory illnesses. Visit the CDC COVID-19 Community Levels Map for updates.

Please visit to request four free COVID-19 self-test kits from the Federal Government. Find a location that has a supply of COVID-19 therapeutics as part of the Test to Treat initiative here. The complete DPH COVID-19 toolbox is located at


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 Definitions


Connecticut Provider Reporting Information


Connecticut Laboratory Reporting Information



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 11/4/2022.