@freemo @Raccoon that’s the Nature paper. The 80% number is from the previously cited CDC paper, which is in turn citing this
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8352980/
So, before you go accusing me of not having read the papers, back up a second, follow the citations, and read it. You got confused in the back and forth (fine), but then are accusing me of misstating something, when in fact I am not.