Well, for the very elderly, they'll likely die of one or the other, if it's their season to die. There will probably be fewer flu deaths, since they will have already died of CV-19 if exposed. By next year, the epidemiologists will have figured a lot of it out (I can just hear those medical researchers critiquing their grad students and their data already). Flu rates will probably be down this year, due to prior deaths and social isolation. As to flu shots, there are differing theories about who should take them and why. This year's wasn't as effective as in some other years. It'll be interesting to see future studies about this year's CV outbreak and whether people with flu shots did better or not (or, whether newly vaccinated people did more poorly - it's just not known yet). I haven't had the flu or a shot in years now. That's based on my own assessment of the shots and my health situation (and alternatives that I think work for me).