Important finding. It suggests that herd immunity could be achieved at a lower threshold than what& #39;s typically assumed, because the most susceptible people are the ones who get infected first. Some of those who remain uninfected do so because they may be less susceptible. 1/2 https://twitter.com/medrxivpreprint/status/1256522569987043328">https://twitter.com/medrxivpr...

What does it mean in a practical sense? Let& #39;s take New York. Seroprevalence studies done earlier show up to 20% were exposed to covid. It& #39;s higher now as epidemic grew. So if 30% of NYC population seroconvert, City could be closer to herd immunity than the 60% + presumed needed.