1. WhiteHouse.gov. Press briefing by White House Covid-19 response team and public health officials. Jul 2022. https://www.whitehouse.gov/briefing-room/press-briefings/2022/07/12/press-briefing-by-white-house-covid-19-response-team-and-public-health-officials-87.
2. Coronavirus in the US: latest map and case count. New York Times. Jul 2022. https://www.nytimes.com/interactive/2021/us/covid-cases.html.
3. PBS News Hour. Jul 2022. New covid variant BA.5 prompts higher infections and reinfections. https://www.pbs.org/newshour/show/new-covid-variant-ba-5-prompts-higher-infections-and-reinfections.