This about people trying to find a method to measure people's susceptibility to a disease. Knowing who is still adequately protected and whose vaccine-induced i

This about people trying to find a method to measure people's susceptibility to a disease. Knowing who is still adequately protected and whose vaccine-induced immunity is waning would allow, among other things, to reduce the number of people that need to be vaccinated again. That should make everyone happy, including the crowd believing vaccines are part of a plot to kill all babies with one-syllable nicknames, or whatever. It would also allow vaccines to go to those needing them more, as long as supplies are constrained, possibly saving a few lives, especially in less rich countries. What I'm trying to say is: are you sure you aren't psychotic?