@feld @sun I had to look that up: https://www.mountsinai.org/health-library/tests/antibody-titer

That would have been helpful back when I was in high school. Because of frequent moves, shot records were lost. There was a day when all students had to prove they were up-to-date or get re-vaccinated. So I had to get some shots that I'd already had.

> no appetite to spend resources on these sorts of problems

I think the antivax "vaccines cause autism" movement caused even those who would have been willing to close ranks against a powerful anti-evidence movement. And the legal immunity from lawsuits (which started in 1976 with the swine flu vaccine and gradually spread) does little to motivate an organization to change what it does or how it does it.