Tracking COVID-19 Booster Doses in the US States
Tracking COVID-19 Booster Doses in the US States
Matthew A. Crane, John A. Romley, Ruth R. Faden
This post reflects information on COVID-19 vaccination rates collected most recently on December 20, 2021.
On November 19, 2021, the Centers for Disease Control and Prevention (CDC) expanded recommendations for COVID-19 booster shots to include all adults over the age of 18. With the recent spread of the SARS-CoV-2 Omicron variant in the United States, public health authorities have increasingly emphasized the importance of being fully vaccinated and boosted for protection against COVID-19.
In order to track rates of booster doses in the United States, we conducted an analysis of CDC data on state-level variations in booster shot coverage. We examined a 9-week period during the booster rollout from October 24, 2021 to December 19, 2021. In this analysis, additional doses as termed by the CDC were considered booster doses. Our analysis only accounts for individuals over the age of 18.
The Video below depicts state-level variation over time, and Table 1 provides a summary of the state-level data. In Table 2 we provide results for individual states. This analysis finds substantial differences between state-level booster coverage, with states ranging in coverage from 10.6% (New Hampshire) to 49.5% (Vermont).
Video: Booster Doses over Time in the United States (as of 12/20/21)
Table 1. Summary of State-Level Booster Vaccination Rates (as of 12/20/21)
| Percent of Adult Population with Booster Dose | States |
| >10%-20% | NH, HI, WV, NC |
| >20%-30% | PA, DC, AL, GA, MS, TX, NV, LA, OK, AZ, UT, AR, FL, SC |
| >30%-40% | NY, CA, NJ, KS, MO, TN, DE, SD, IN, KY, AK, WY, VA, ID, WA, ND, MD, MA, CT, IL, OR, OH, NE, NM, MT |
| >40%-50% | RI, CO, MI, ME, IA, WI, MN, VT |
Table 2. State-Level Booster Vaccination Rates (as of 12/20/21)
| State | Percent of Adult Population with Booster Dose |
| Vermont | 49.5 |
| Minnesota | 47.1 |
| Wisconsin | 43.7 |
| Iowa | 43.2 |
| Maine | 42.2 |
| Michigan | 40.9 |
| Colorado | 40.5 |
| Rhode Island | 40 |
| Montana | 39.7 |
| Nebraska | 39.6 |
| New Mexico | 39.6 |
| Ohio | 39.4 |
| Illinois | 37.5 |
| Oregon | 37.5 |
| Connecticut | 37.2 |
| Massachusetts | 36.9 |
| Maryland | 36.7 |
| North Dakota | 36.5 |
| Washington | 36.1 |
| Idaho | 35.9 |
| Virginia | 35.6 |
| Wyoming | 35.4 |
| Alaska | 35 |
| Kentucky | 34.7 |
| Indiana | 33.8 |
| Delaware | 33.7 |
| South Dakota | 33.7 |
| Missouri | 33.3 |
| Tennessee | 33.3 |
| Kansas | 33 |
| New Jersey | 32.4 |
| California | 32.2 |
| New York | 30.5 |
| Arkansas | 29.9 |
| Florida | 29.9 |
| South Carolina | 29.9 |
| Utah | 29.4 |
| Arizona | 29.3 |
| Oklahoma | 29.1 |
| Louisiana | 28.9 |
| Nevada | 27.7 |
| Texas | 27.3 |
| Mississippi | 26.3 |
| Georgia | 25.9 |
| Alabama | 25.8 |
| District of Columbia | 25 |
| Pennsylvania | 23 |
| North Carolina | 19.7 |
| West Virginia | 18.9 |
| Hawaii | 18.3 |
| New Hampshire | 10.6 |