I think getting 100% of the world's population vaccinated is an unrealistic goal, and given how 'small' the world has become (via international travel), I'm not sure we can/could prevent the spread of ANY highly contagious disease. The only shot is to nip it in the bud which has also proven difficult (for the same reason - travel). Seems the only shot is to follow the advice of the scientists regarding precautions and ride it out. If you're an ol' fart, trying not to die in the meantime also sounds like a good idea. In my area, service and home delivery people are always masked but even so, if they have to come inside, they're greeted with a non-contact thermometer. So far, none have seemed to mind. They know it's not personal. But hey, everyone has to determine for themselves the level of risk they're comfortable with. Me, I just want to see my grandchildren graduate from college and I'm long since past the age of getting shot by a jealous husband .

chas