Bazz. You are correct, the virus is microscopic. And spread for the most part by the vehicles it uses to acquire hosts, i.e., Droplets from coughs and sneezes and the aerosols you breath out constantly, that are far more evident on cold and frosty mornings. And that's what masks reduce or prevent, to the point of preventing transmission by up to 80%!

Hand washing and ensuring you are two arm's length from others also slows the spread!

Given the way this virus mutates, even vaccination may not be enough?

And therefore living with it may require all the above!?
Alan B.