The initial estimate was that 70% of population (not only adult) would be suffic...

the_why_of_y on Dec 2, 2021 | parent | context | favorite | on: Germany locks down unvaccinated people, as leaders...

The initial estimate was that 70% of population (not only adult) would be sufficient to achieve herd immunity, but the problem is that while the initial virus had R_0 of 2-3, the Delta variant's is about 6.