[pip08456]

Originally Posted by Sephiroth

Hmmm. Using that formula and accepting the 85% efficacy hypothesis, we get the following herd immunity threshold (H) against different R numbers.
___________________________________
E=0.85
R H
1.5 39%
2.0 59%
3.0 78%
4.0 88%
5.0 94%
6.0 98%


E=0.90
R H
1.5 37%
2.0 56%
3.0 74%
4.0 83%
5.0 89%
6.0 93%
___________________________________

As I recall, at the peak of the pandemic, R never rose higher than 3. Maybe someone knows different.

Project Fear again aptly noticed by Andrew.

Someone's math is wrong somewhere (not your's Seph)

“If you have a virus with an R0 of 6 or 7, then the herd immunity point is somewhere in the region of 85%”, explained Martin Hibberd, Professor of Emerging Infectious Diseases at London School of Hygiene and Tropical Medicine.

https://www.thelancet.com/journals/l...328-3/fulltext