From the Document: "The sources below can help congressional staff track the progress of the U.S. Coronavirus Disease 2019 (COVID-19) vaccination campaign at the national, state, and local levels. Sources were selected for having commonly cited and frequently requested data. This list is not intended to be comprehensive. Because different resources use different methodologies, readers should check websites' notes and caveats, and use caution when comparing data. For help interpreting or analyzing these data, congressional staff should contact CRS (202-707-5700, or place an online request). For an overview of considerations for Congress, see CRS Insight IN11584, 'Tracking COVID-19 Vaccines: U.S. Data Systems and Related Issues.' For international sources, see CRS Insight IN11732, 'International COVID-19 Data and Vaccine Distribution: Selected Resources'. Centers for Disease Control and Prevention's (CDC's) Vaccines for COVID-19 [hyperlink] can assist constituents with questions about the vaccines. Example sources on public attitudes toward vaccination include CDC's National Immunization Survey [hyperlink] and State of Vaccine Confidence Insights Report [hyperlink], Census Bureau [hyperlink], Kaiser Family Foundation [hyperlink], Carnegie Mellon University [hyperlink], Johns Hopkins [hyperlink], and scholarly articles [hyperlink]."
CRS Insight, IN11595
Congressional Research Service: https://crsreports.congress.gov/