What you said about those who have had it multiple times. My thought is always, "are you nuts?? You must not be paying any attention...or you're paying attention to the wrong things. And don't you wonder why you're sick with all kinds of illnesses year-round???" I just can't with them anymore, but sadly it's everyone around me so I can't opt out. I just keep masking and if one is sick, stay away from them as much as possible (difficult at work, though). I don't know what else we can do.