Perhaps the damn masks people continue to insist on wearing harbor dangerous vectors. I laugh when I think of how people use the same mask over and over, while handling the outside and inside which harbor germs, put it on and then breathe in all the crud on the mask.. You and I know that a family of four is not using the mask once. Add to that the mask lunatics are most likely vaccinated, along with their children, and you have the perfect storm: lowered immune system breathing in and handling masks with crud all over it, from mask reuse, improper storage, and poor hand hygiene.