California Department of Public Health: https://www.cdph.ca.gov/Programs/CID/DCDC/Pages/Immunization/ncov2019.aspx

 

San Luis Obispo Departrment of Public Health: https://www.slocounty.ca.gov/Departments/Health-Agency/Public-Health/Novel-Coronavirus-(COVID-19).aspx

 

Centers for Disease Control: https://www.cdc.gov/coronavirus/2019-ncov/index.html

 

California Department of Education: https://www.cde.ca.gov/ls/he/hn/coronavirus.asp