Daily coronavirus updates: 70% of recent COVID-19 cases in Connecticut are among unvaccinated people, new state numbers show

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About 70% of recent COVID-19 cases in Connecticut have been among people who are not fully vaccinated against the disease, new state numbers showed Thursday.

Despite representing a minority of Connecticut residents, unvaccinated people accounted for 1,848 out of the state’s 2,627 new COVID-19 cases over the past week. On a per-person basis, unvaccinated people were about five times as likely to test positive for COVID-19 as vaccinated people, according to state numbers.

These statistics align with what health experts have preached since the emergence of the delta variant in Connecticut earlier this summer: Breakthrough cases are possible, but the unvaccinated continue to face substantially higher risk than the vaccinated.

State numbers show that unvaccinated people have also been far more likely to be hospitalized with COVID-19 and to die from the disease. As of Thursday, 73% of people hospitalized with COVID-19 in Connecticut were unvaccinated, while unvaccinated people had been about eight times as likely to die with or because of the disease.

In total, Connecticut has reported 11,179 COVID-19 cases and 83 deaths among people who have been fully vaccinated. Of those 83 deaths, 66 were among people age 75 or older.

Meanwhile, the state on Thursday reported 31 additional COVID-19 deaths over the past week, up from 22 the week prior. Connecticut’s other coronavirus metrics remained essentially flat, as the state very gradually moves past its delta variant peak.

Cases and positivity rate

Connecticut reported 1,066 COVID-19 cases out of 36,180 tests Thursday, for a positivity rate of 2.95%. The state’s seven-day positivity rate now stands at 2.89%, unchanged from Wednesday and essentially unchanged from last week.

The state has averaged 641 daily cases over the past week, up slightly from the average on other recent days.

Seven of Connecticut’s eight counties — all but Fairfield County — currently have “high” COVID-19 transmission, as classified by the Centers for Disease Control and Prevention. Fairfield County has “substantial” transmission.

Eighty-four of Connecticut 169 municipalities currently qualify for the state’s “red alert” category, which is triggered when a town or city experiences at least 15 daily COVID-19 cases per 100,000 residents over a two-week period.


As of Thursday, Connecticut has 325 patients hospitalized with COVID-19, down three from Wednesday. Officials say that total includes some patients who are hospitalized for non-coronavirus reasons but test positive as part of a routine screening process.

COVID-19 hospitalizations in Connecticut have declined gradually since late August but remain at a substantially higher level than during the late spring and early summer.


Connecticut on Thursday reported 31 COVID-19 deaths over the past week, bringing its total during the pandemic to 8,447.

The United States has now recorded 667,750 COVID-19 deaths, according to the Coronavirus Resource Center at Johns Hopkins University.


As of Thursday, 74.9% of all Connecticut residents and 85.9% of those 12 and older had received at least one COVID-19 vaccine dose, while 67.3% of all residents and 77.3% of those 12 and older were fully vaccinated, according to the CDC.

Vaccine providers in Connecticut administered 36,824 doses from Sept. 5-11, down slightly from the previous week and the fewest in any week since late July.

Alex Putterman can be reached at aputterman@courant.com.

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