I am not only in the over 60 category, but have family members who are immuno-supressed and/or elderly with health problems who I do visit.
Therefore, my tolerance for exposing myself to wider audience of humanity is probably very different than many of you.
Of course, even if I were 30 and those other factors were not in place, I would of course stay away from elderly people if I was out and about a lot in big crowds, just to keep THEM safe. In other words, if you are volunteering in a nursing home, you kinda have to hold yourself to a "higher standard", but this is common sense.