https://science.sciencemag.org/content/early/2020/06/22/science.abc6810 https://science.sciencemag.org/content/early/2020/06/22/scie... It’s at least plausible

https://science.sciencemag.org/content/early/2020/06/22/science.abc6810 https://science.sciencemag.org/content/early/2020/06/22/scie... It’s at least plausible. The traditional definition of herd immunity assumes a homogenous population as the term has mainly been used in a vaccine strategy context. The above paper revises the definition based on a heterogenous model with the conclusion that the dynamics may be quite different in an actual epidemic.