Well with a >99.95% survival rate in the under 50 age group, they are not exactly alone.
https://www.cdc.gov/coronavirus/2019-ncov/hcp/planning-scena...
https://www.cdc.gov/coronavirus/2019-ncov/hcp/planning-scena...
https://www.nature.com/articles/d41586-020-01738-2
Edit: I misread your qualifier of "under 50 age group". Overall fatality rate seems to be around 0.4% according to the CDC site.