5,223 unique documents from governors' offices and state health departments across all U.S. states and the District of Columbia. The collection was created by researchers from the Yale School of Medicine and Yale's Tobin Center for Economic Policy. It covers publications from December 1, 2020 to September 30, 2021, focusing on the COVID-19 vaccination program.
Use Cases
- Analyze communication strategy effectiveness based on the publication type classification (e.g., information vs. policy)
- Compare state-level messaging volume and focus over time based on monthly publication counts
- Study the evolution of vaccination program guidance based on the content of official state documents
Strengths
- 5,223 unique documents provide a substantial corpus for analysis
- Clear temporal coverage from December 2020 to September 2021
- Geographic coverage includes all 50 U.S. states and the District of Columbia
- Documents are categorized by publication type (e.g., information, policy, flyers, milestones)
Limitations
- Column-level documentation is absent; field semantics must be inferred after download
- Data is limited to English-language publications from state .gov websites, excluding other sources and languages
Provenance
- Source
- Yale School of Medicine and Yale's Tobin Center for Economic Policy
- Collection Method
- Documents were collected from official state government websites using custom date-range and keyword searches.
- Time Range
- December 1, 2020 to September 30, 2021
- Freshness
- Last updated 2026-05-04 07:12:00; freshness should be verified
- Geography
- All 50 U.S. states and the District of Columbia