Johns Hopkins Coronavirus Dashboard
https://www.arcgis.com/apps/opsdashboard/index.html#/bda7594740fd40299423467b48e9ecf6
World Health Organization Coronavirus Dashboard
https://experience.arcgis.com/experience/685d0ace521648f8a5beeeee1b9125cd
U.S. Centers for Disease Control Coronavirus Information
https://www.cdc.gov/coronavirus/
CIDRAP – Center for Infectious Disease Research and Policy
Wikipedia Timeline of the SARS-CoV-2 Outbreak
https://en.wikipedia.org/w/index.php?title=Timeline_of_the_2019%E2%80%9320_coronavirus_outbreak