On June 25, 2020, the Petris Center released a study titled, “What are the Health Care Costs of COVID-19 in California?: State and County Estimates” by Richard M. Scheffler, Daniel R. Arnold, Brent D. Fulton, Alexandra Peltz, Taylor L. Wang, and John Swartzberg. The report estimates the cost of COVID-19 for a 5% prevalence in the state at $2.4 billion. The authors assessed county level costs and adjusted for hospitalization rates by age group, payor mix (Commercial, Medicare, Medi-Cal, uninsured), and a county hospital cost index. The report also includes cost estimates for 15%, 30%, and 60% prevalence of the disease in the appendix.