1. Population Reference Bureau. Fact sheet: aging in the United States. Published July 15, 2019. Accessed January 27, 2021. https://www.prb.org/aging-unitedstates-fact-sheet/
2. COVID-19: older adults. CDC. Updated December 13, 2020. Accessed January 27, 2021. https://www.cdc.gov/coronavirus/2019-ncov/need-extra-precautions/older-adults.html