They are not “less susceptible” so much as they just don’t tend to have the comorbidities for CCP-19 to trigger. Same distribution as the common flu in terms of the shape of the curve, just with a greater amplitude.
But from the handful of young people who I know that have had the bug, they haven't all been perfectly healthy. Thus I don't know if it is comorbidities or if the young ones are just stronger.
That said, henceforth I'll use comorbidities. Thanks.