Have they identified any particular "groups" or defined, possibly visible, "characteristics" that make certain people more susceptible to severe symptoms or is that getting dangerously close to a possible eugenics programme?
So...human response to a disease process is genetic, which may have host/organism variables...NEVER!.......didn't know that.
That will give some medical depth and staff something together their teeth into with financial support from whoever is gullible.
Good luck.