CDC: Hartford, New Haven & New London Counties Wear Masks Indoors. This is regardless of vaccination status due to high covid community transmission rates.
Substantial community transmission is classified by the CDC as 50-99 cumulative cases per 100,000 people in the past seven days.
That means people in these communities should wear a mask indoors, regardless of vaccination status.
The CDC COVID Data Tracker shows the other state counties listed under “moderate” transmission, which is classified as 10-49 cumulative cases per 100,000 people in the past seven days.