On what is based a personal choice? It's based on some information as well - so by trusting a Facebook expert we choose to not trust a medical expert. Choices? Yes. But while some of them are damaging to the feeling of liberty, others are damaging for both the public and personal health, when we are replacing experience with a loud mouth, or substituting medicine with philosophy. And while the state can do only so much for the personal health, we expect from a state to take care of the public health - thus the tyranny of personal choice is in a wrong place in a working society.

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?