There's the CDC study and the Israeli one AFAIK, here's an analysis of the methodologies: https://brownstone.org/articles/a-review-and-autopsy-of-two-covid-immu

There's the CDC study and the Israeli one AFAIK, here's an analysis of the methodologies: https://brownstone.org/articles/a-review-and-autopsy-of-two-covid-immunity-studies/ https://brownstone.org/articles/a-review-and-autopsy-of-two-...