1. CDC. (2022). Burden of Influenza. Centers for disease control and prevention. Retrieved October 4, 2022 from https://www.cdc.gov/flu/about/burden/index.html.
2. CDC. (2021). Upcoming 2020–2021 Influenza Season. Centers for disease control and prevention. Retrieved October 25, 2021 from https://www.cdc.gov/flu/season/faq-flu-season-2020-2021.htm.
3. World Health Organization. (2022). United States of America: WHO Coronavirus Disease (COVID-19) Dashboard With Vaccination Data. Retrieved December 12, 2022 from https://covid19.who.int.
4. Rubin, R. (2022). The dreaded ‘twindemic’ of influenza and COVID-19 has not yet materialized—might this be the year? JAMA, 328(15), 1488–89. https://doi.org/10.1001/jama.2022.15062
5. Branswell, H. CDC: Signs Point to an Early Start for Flu Season, with Cases Already Ticking up in Parts of the U.S. STAT (blog). Retrieved October 17, 2022 from https://www.statnews.com/2022/10/17/cdc-signs-point-to-early-start-flu-season/.