Table 3. Estimates of the Percentage of Expected SARS-CoV-2 Infections and COVID-19 Hospitalizations and Deaths Prevented by Direct Effects of COVID-19 Vaccination by HHS Region, December 1, 2020, to September 30, 2021, and September 1 to September 30, 2021.
| HHS regiona | Estimated expected outcomes prevented, % (95% UI) | ||
|---|---|---|---|
| Infections | Hospitalizations | Deaths | |
| December 1, 2020, to September 30, 2021 | |||
| 1 | 31 (29-34) | 32 (29-34) | 32 (27-38) |
| 2 | 30 (28-32) | 29 (27-31) | 27 (22-33) |
| 3 | 27 (25-30) | 28 (26-31) | 29 (23-35) |
| 4 | 27 (25-29) | 33 (30-36) | 36 (31-42) |
| 5 | 30 (28-32) | 33 (31-36) | 33 (27-39) |
| 6 | 31 (21-45) | 35 (28-44) | 38 (30-47) |
| 7 | 29 (27-31) | 32 (30-35) | 34 (29-40) |
| 8 | 32 (30-34) | 35 (33-38) | 35 (30-41) |
| 9 | 31 (29-33) | 31 (29-33) | 32 (27-37) |
| 10 | 36 (34-39) | 40 (38-44) | 41 (36-47) |
| September 1-30, 2021 | |||
| 1 | 61 (59-63) | 63 (60-65) | 64 (60-67) |
| 2 | 63 (60-65) | 64 (61-67) | 65 (61-68) |
| 3 | 57 (54-60) | 60 (57-63) | 61 (57-64) |
| 4 | 44 (42-47) | 51 (48-54) | 52 (49-57) |
| 5 | 54 (51-56) | 59 (56-62) | 60 (57-64) |
| 6 | 55 (24-87) | 58 (41-81) | 59 (44-78) |
| 7 | 48 (45-50) | 53 (50-57) | 56 (52-60) |
| 8 | 54 (51-56) | 57 (54-59) | 58 (54-61) |
| 9 | 54 (52-56) | 56 (54-58) | 57 (54-60) |
| 10 | 54 (52-57) | 58 (55-61) | 59 (56-63) |
Abbreviations: HHS, US Department of Health and Human Services; UI, uncertainty interval.
HHS region 1 includes Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, Vermont; region 2, New Jersey, New York; region 3, Delaware, Maryland, Pennsylvania, Virginia, and West Virginia; region 4, Alabama, Florida, Georgia, Kentucky, Mississippi, North Carolina, South Carolina, and Tennessee; region 5, Illinois, Indiana, Michigan, Minnesota, Ohio, and Wisconsin; region 6, Arkansas, Louisiana, New Mexico, Oklahoma, and Texas; region 7, Iowa, Kansas, Missouri, and Nebraska; region 8, Colorado, Montana, North Dakota, South Dakota, Utah, and Wyoming; region 9, Arizona, California, Hawaii, and Nevada; and region 10, Alaska, Idaho, Oregon, and Washington.