> Herd immunity kicks in somewhere less than 100% vaccinated Yes, but 1 adult "100% vaccinated" takes 2 doses of any of the current vaccines. if 75% of the po

> Herd immunity kicks in somewhere less than 100% vaccinated Yes, but 1 adult "100% vaccinated" takes 2 doses of any of the current vaccines. if 75% of the population of a country are "adults who can be vaccinated", and the rest are e.g. under 16, or the few adults will have medical issues that prevent vaccination; then you're shooting for 1.5 vaccines per person, i.e. 150%. And the longer term goal is also to vaccinate children as young as 6. Trials are already underway: https://www.nihr.ac.uk/news/first-childrens-covid-19-vaccine-trial-open/26870 https://www.nihr.ac.uk/news/first-childrens-covid-19-vaccine... And this might actually be necessary for full Herd immunity (if it starts at 80% or 85% fully vaccinated).