1. Coronavirus disease (COVID-19) pandemic. World Health Organization. https://www.who.int/emergencies/diseases/novel-coronavirus-2019?adgroupsurvey={adgroupsurvey}&gclid=EAIaIQobChMIp7r9staI-gIVqxXUAR27qQwdEAAYAiAAEgKSJfD_BwE. Updated November 29, 2022. Accessed November 29, 2022.
2. A national strategy for the “new normal” of life with COVID;Emanuel;JAMA,2022
3. Centers for Disease Control and Prevention. COVID-19 after vaccination: possible breakthrough infection.https://www.cdc.gov/coronavirus/2019-ncov/vaccines/effectiveness/why-measure-effectiveness/breakthrough-cases.html. Updated June 23, 2022. Accessed November 29, 2022.
4. COVID-19 incidence and death rates among unvaccinated and fully vaccinated adults with and without booster doses during periods of delta and omicron variant emergence - 25 U.S. Jurisdictions, April 4–December 25, 2021;Johnson;MMWR Morb Mortal Wkly Rep,2022
5. Hill AL, Whitfield G, Morford M, et al. Brief summary of findings on the association between physical inactivity and severe COVID-19 outcomes. https://www.cdc.gov/coronavirus/2019-ncov/downloads/clinical-care/E-Physical-Inactivity-Review.pdf. Accessed April 12, 2022.