COVID-19 Update 4/1

April 1, 2021


Click here for all of today's COVID-19 data.

Data updates on vaccine administration in Connecticut

The following data represents the total number of COVID-19 vaccinations administered in Connecticut, as reported to the state as of today:


Total Administered

First dose administered


Fully vaccinated


Total doses administered


*NOTE: A total of 49,013 doses of the single-dose J&J vaccine are included in each category

Connecticut continues to rank among the top three most vaccinated states in the nation.

So far, those who have received their first dose include:

  • 81% of people over the age of 65;
  • 65% of people over the age of 45; and
  • 43% of people over the age of 16.

The Lamont administration is estimating that vaccine supply in Connecticut will exceed demand by late April.

Current vaccine eligibility in Connecticut includes all individuals over the age of 16. Appointments are required to be made in advance at all vaccination clinics statewide. To learn how to make an appointment, visit

Data updates on variants in Connecticut

The following data contains the cumulative number of SARS-CoV-2 variants that have been reported among Connecticut residents as of today:

Variants of concern

  • B.1.1.7 (first detected in the United Kingdom): 469 cases
  • B.1.351 (first detected in South Africa): 6 cases*
  • P.1 (first detected in Brazil): 2 cases
  • B.1.427 (first detected in California): 30 cases
  • B.1.429 (first detected in California): 90 cases

Variants of interest

  • B.1.526 (first detected in New York): 88 cases
  • B.1.525 (first detected in Africa and Europe): 10 cases
  • P.2 (first detected in Brazil): 7 cases

*B.1.351: The Department of Public Health reported 7 cases last week, the Global Initiative for Sharing Avian Influenza Data has 6 sequences reported to date.

For more information on variants, see page 7 of this week’s extended COVID-19 data report.

Weekly update on the impact of COVID-19 on nursing homes and assisted living facilities

The following documents contain the weekly data regarding each of the nursing homes and assisted living facilities in Connecticut that have reported positive cases of COVID-19 among their residents. The data is presented as it was reported to the state by each of the facilities.

*Report from April 1, 2021 on COVID-19 in Connecticut nursing homes

*Report from April 1, 2021 on COVID-19 in Connecticut assisted living facilities

Weekly update of the Department of Public Health’s COVID-19 Alert Map: 146 of 169 municipalities in red zone alert level

The Connecticut Department of Public Health today released its weekly COVID-19 Alert Map, which indicates that 146 of 169 towns and cities in Connecticut are currently in the red zone alert level, the highest of the state’s four alert levels.

The color-coded zones include:

  • Red: Indicates case rates over the last two weeks of greater than 15 per 100,000 population
  • Orange: Indicates case rates between 10 to 14 cases per 100,000 population
  • Yellow: Indicates case rates between 5 and 9 per 100,000 population
  • Gray: Indicates case rates lower than five per 100,000 population

The weekly alert map is also accompanied by a chart that provides guidance on recommended actions based on the alert levels for individual residents; institutions such as schools, houses of worship, and community organizations; and municipal leaders and local health directors.

The COVID-19 Alert Map is updated every Thursday afternoon and can be found within the Data Tracker page of the state’s coronavirus website at

Providing information to Connecticut residents

The CTAlert notification system – the state’s emergency alert system – provides text message notifications to users. Sign up by texting COVIDCT to 888-777. And for the most up-to-date information from the state on COVID-19 – including frequently asked questions, guidance and resources – visit