Counties with highest COVID-19 infection rates in Connecticut
The vaccine deployment in December 2020 signaled a turning point in the COVID-19 pandemic. By the end of May 2021, 40% of the U.S. population was fully vaccinated. But as vaccination rates lagged over the summer, new surges of COVID-19 came, including Delta in the summer of 2021, and now the Omicron variant, which comprises the majority of cases in the U.S.
Researchers around the world have reported that Omicron is more transmissible than Delta, making breakthrough and repeat infections more likely.
The United States as of Nov. 16 reached over 1 million COVID-19-related deaths and 98.1 million COVID-19 cases, according to Johns Hopkins University. Currently, 68.6% of the population is fully vaccinated, and 10.1% of vaccinated people have received the most recently available bivalent booster doses.
Stacker compiled a list of the counties with highest COVID-19 infection rates in Connecticut using data from the U.S. Department of Health & Human Services and vaccination data from Covid Act Now. Counties are ranked by the highest infection rate per 100,000 residents within the week leading up to Nov. 10, 2022. Cumulative cases per 100,000 served as a tiebreaker.
Keep reading to see whether your county ranks among the highest COVID-19 infection rates in your state.
#8. Windham County, CT
- Cumulative cases per 100k: 25,762 (30,085 total cases)
--- 0.3% more cases per 100k residents than Connecticut
- Cumulative deaths per 100k: 283 (330 total deaths)
--- 12.4% less deaths per 100k residents than Connecticut
- Population that is fully vaccinated: 66.0% (77,125 fully vaccinated)
#7. Tolland County, CT
- Cumulative cases per 100k: 17,364 (26,171 total cases)
--- 32.4% less cases per 100k residents than Connecticut
- Cumulative deaths per 100k: 200 (301 total deaths)
--- 38.1% less deaths per 100k residents than Connecticut
- Population that is fully vaccinated: 69.0% (104,048 fully vaccinated)
#6. Litchfield County, CT
- Cumulative cases per 100k: 21,663 (39,065 total cases)
--- 15.7% less cases per 100k residents than Connecticut
- Cumulative deaths per 100k: 273 (492 total deaths)
--- 15.5% less deaths per 100k residents than Connecticut
- Population that is fully vaccinated: 77.9% (140,526 fully vaccinated)
#5. Hartford County, CT
- Cumulative cases per 100k: 24,921 (222,222 total cases)
--- 3.0% less cases per 100k residents than Connecticut
- Cumulative deaths per 100k: 371 (3,305 total deaths)
--- 14.9% more deaths per 100k residents than Connecticut
- Population that is fully vaccinated: 78.5% (700,135 fully vaccinated)
#4. Fairfield County, CT
- Cumulative cases per 100k: 26,318 (248,267 total cases)
--- 2.5% more cases per 100k residents than Connecticut
- Cumulative deaths per 100k: 302 (2,849 total deaths)
--- 6.5% less deaths per 100k residents than Connecticut
- Population that is fully vaccinated: 85.3% (804,367 fully vaccinated)
#3. New London County, CT
- Cumulative cases per 100k: 26,172 (69,410 total cases)
--- 1.9% more cases per 100k residents than Connecticut
- Cumulative deaths per 100k: 276 (733 total deaths)
--- 14.6% less deaths per 100k residents than Connecticut
- Population that is fully vaccinated: 81.9% (217,123 fully vaccinated)
#2. New Haven County, CT
- Cumulative cases per 100k: 28,209 (241,117 total cases)
--- 9.8% more cases per 100k residents than Connecticut
- Cumulative deaths per 100k: 350 (2,994 total deaths)
--- 8.4% more deaths per 100k residents than Connecticut
- Population that is fully vaccinated: 81.3% (694,697 fully vaccinated)
#1. Middlesex County, CT
- Cumulative cases per 100k: 22,446 (36,461 total cases)
--- 12.6% less cases per 100k residents than Connecticut
- Cumulative deaths per 100k: 317 (515 total deaths)
--- 1.9% less deaths per 100k residents than Connecticut
- Population that is fully vaccinated: 86.3% (140,174 fully vaccinated)
