My guess: It might not make _the_ difference whether you _get_ it, but it's not at all unlikely (given all the evidence that has accumulated so far & extrapolation from experience w/ other viral respiratory infections) that it will influence disease severity significantly.
http://dminder.ontometrics.com/
I only wish the algorithm used to derive the estimates was public/documented somewhere ...
http://dminder.ontometrics.com/Estimation.html