1. COVID-19 Dashboard. 2021.
2. COVID Data Tracker. 2021.
3. Death Rates from Coronavirus (COVID-19) in the United States as of 16 December 2021, by State (Per 100,000 People). 2021.
4. Rate of Coronavirus (COVID-19) Cases in the United States as of 16 December 2021, by State (Per 100,000 People). 2021.
5. COVID-19 Community Profile Report. 2021.