If I understand correctly then it seems good advice would be to stay away for at least two weeks from a person that takes the shot as this is when they will do the most shedding except for cases where it has altered permanently the persons DNA (it didn't sound like that happens all the time or we're not sure it happens at all). So then,It would seem to reason that if you are exposed to the shed lightly and develop mild symptoms, then this will be good enough to (of course) cause your body to produce white blood cells to fight it. Thus is the beginning of your natural immunity to it. The big question is, would deveping immunity to the one spike be enough to give you immunity against the entire virus? If it does, then in a way, one of our goals should be to willfully (gently) be introduced to it to the extent that we show (hopefully) minor symptoms, maybe even no symptoms would be good enough to get your body to start to build immunity. After some time, your body will be so trained to recognize it and destroy it you won't even know you had it. I suspect a certain percentage of people have at least some immunity from the first big go-round. A lot of people got minor sniffles and got over it. And despite of the commercial I just seen on TV (ya, I know.) further mutations are almost always weaker. Any ways, point is, if we were all immune then there is no longer power in the virus through fear