In February 2021, a town in Brazil showed up for a groundbreaking randomized Covid vax trial, providing evidence of population effects of mass vaccination in a pandemic.
My latest @plos.org post digs into this exciting precedent & why it matters:
absolutelymaybe.plos.org/2026/03/28/a...
When I was young, while I understood pandemics that kill millions could happen in theory, I really thought they were a thing…
