Yeah I know. And that is unfortunate. The natural herd immunity is about impossible unless your willing to kill off most of the population. Herd Immunity by vaccination is simply difficult unless most every one is vaccinated. So to me the outlook is, as I wrote, most like the flu as opposed to measles. Everyone gets a flu shot once a year. Maybe that's what we will be looking at depending on how long we find out these vaccines are good for.
