May 20, 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 Tolland 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.

Zika Virus

Aedes aegypti


Zika 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. Zika outbreaks have been reported in tropical Africa, Southeast Asia, the Pacific Islands, Central and South America, the Caribbean, and in Puerto Rico. In Connecticut, surveillance is conducted to identify travel-related cases. There is no vaccine to prevent or medicine to treat Zika virus infection. The best way to prevent getting sick from Zika virus is to prevent mosquito bites.


About Zika Virus

Where Has Zika Virus Been Found?

ArboNET National Data


Traveler’s Health

Zika Virus and Planning for Travel

Prevent Bug Bites


Information for Clinicians

Letter from the Centers for Disease Control and Prevention      

(Dengue and Zika 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

Connecticut Zika virus Surveillance

Zika virus was added to the state-wide reportable diseases list in February 2016. In Connecticut, surveillance is conducted to identify travel-related cases. Since 2016, an average of 40 cases (range 0 to 107) have been reported to the Connecticut Department of Public Health (DPH) annually. The majority of cases were reported during the 2016 outbreak.

Connecticut Annual Infectious Diseases Statistics




Page last updated 6/8/2020.