I was going by this paper in the Lancet, where they note that it's not clear if the vaccines will provide sterilising immunity in the upper airways: https://ww

I was going by this paper in the Lancet, where they note that it's not clear if the vaccines will provide sterilising immunity in the upper airways: https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(20)31976-0/fulltext https://www.thelancet.com/journals/lancet/article/PIIS0140-6... This is from September, though, so maybe more is known about that now. I haven't seen news about that, however.