1. Agency for Healthcare Research and Quality. (2020). National healthcare quality and disparities reports (NHQDR). https://nhqrnet.ahrq.gov/inhqrdr/National/benchmark/table/All_Measures/All_Topics#achieved
2. The relative burden of community-acquired pneumonia hospitalizations in older adults: a retrospective observational study in the United States
3. Centers for Disease Control and Prevention. (2021). Weekly updates by select demographic and geographic characteristics: Provisional death counts for coronavirus disease 2019 (COVID-19). https://www.cdc.gov/nchs/nvss/vsrr/covid_weekly/index.htm
4. Centers for Disease Control and Prevention. (2022a). Pneumococcal vaccine timing for adults. https://www.cdc.gov/vaccines/vpd/pneumo/downloads/pneumo-vaccine-timing.pdf
5. Centers for Disease Control and Prevention. (2022b). Use of COVID-19 vaccines in the United States: Interim clinical considerations. https://www.cdc.gov/vaccines/covid-19/clinical-considerations/covid-19-vaccinesus.html