There are recent research papers supporting that theory, and lowering the threshold for herd immunity much lower to 30-40%
If that is the case then places like NYC are probably pretty close.
If that is the case then places like NYC are probably pretty close.
https://www.medrxiv.org/content/10.1101/2020.04.27.20081893v... - Individual variation in susceptibility or exposure to SARS-CoV-2 lowers the herd immunity threshold
This effect will be amplified if the initial vaccinations are given (as they should be) to the potential superspreaders, like healthcare workers and essential manual laborers.