CRS Insight –  COVID-19 Vaccination: Selected U.S. Data Sources Updated March 16, 2021 – “The sources below can help congressional staff track the progress of the U.S. 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. Additional sources may be added in future updates. Because different resources use different methodologies, readers should check websites’ notes, definitions, and caveats. Readers should also use caution when comparing data across sources or geographies…For an overview of vaccine data systems and considerations for Congress, see CRS Insight IN11584, Tracking COVID-19 Vaccines: U.S. Data Systems and Related Issues. The Centers for Disease Control and Prevention’s (CDC’s) COVID-19 Vaccine website can assist constituents with vaccine questions, including “How Do I Get a Vaccine?” Vaccine eligibility varies by state, locality, and provider. Sources tracking state eligibility policies include Kaiser Family Foundation, New York Times, USAFacts, National Governors Association, Johns Hopkins University, and National Academy for State Health Policy. Example data sources on public attitudes toward vaccination include Census Bureau, University of Southern California, Kaiser Family Foundation, Carnegie Mellon University, AP-NORC, University of Minnesota, Pew, and scholarly articles…”