I am pointing out curse ship populations are actually at lower risk than society for this specific disease. The crew is all young and it’s mostly irrelevant if someone is 4 or 40 relative to people being a heathy 80 or sick 90.

That's just not true. It's pretty much impossible to be 80 years old and not be more susceptible to infection generally. Statistically the people dying have an average of 2.7 comorbiditities.