John Hopkins Medicine actually quotes the CDC report that I stated when talking about this question:
Coronavirus and COVID-19: Younger Adults Are at Risk, Too
Coronavirus, Social and Physical Distancing and Self-Quarantine
Mayo Clinic
CIDRAP which is the infectious disease arm of the Univeristy of Minnesota also references another CDC report.
US COVID-19 deaths top China's; data show impact on those with chronic disease
Preliminary Estimates of the Prevalence of Selected Underlying...
1/4 of all those hospitalized had no comorbidities and 1/5 of those in ICU had no comorbitidies.
I hear that Australia has had 24 deaths and that they have shut down all travel from one state to another.
It is hard to know what to believe. Some are saying that 1 1/2 million will die (probably true), CDC is saying up to 200,000, and others are saying less than 100,000. Gov. DeWine of Ohio said that Ohio probably will be on lockdown until the end of May.