1. California Department of Public Health. COVID-19 updates. www.cdph.ca.gov/Programs/CID/DCDC/Pages/Immunization/nCOV2019.aspx. Accessed Aug. 21, 2020.
2. Centers for Disease Control and Prevention. People with certain medical conditions. www.cdc.gov/coronavirus/2019-ncov/need-extra-precautions/people-with-medical-conditions.html. Accessed Aug. 21, 2020.
3. California Department of Public Health. COVID-19 statewide update. update.covid19.ca.gov. Accessed Aug. 21, 2020.
4. California Department of Public Health. State officials announce latest COVID-19 facts www.cdph.ca.gov/Programs/OPA/Pages/NR20-194.aspx. Accessed Aug. 23, 2020.
5. Centers for Disease Control and Prevention. Guidance for dental settings. www.cdc.gov/coronavirus/2019-ncov/hcp/dental-settings.html. Accessed Aug. 23, 2020.