[KarlInOhio]

He compares this value with prior Measles vaccinations, in which you would have to vaccinate 1.3 children to protect 1 child from the disease. He shows through his calculations, using Pfizer’s data, 113 people have to be vaccinated to protect 1 person from becoming ill with Covid-19.

But, as you stated before, this is the two month calculation for Covid. How long is the measles counted to get to the 1.3 number? 18 years of childhood? A whole lifetime? That is a big apples to oranges comparison.

[mrsmith]

Not sure you’ll find the answer to your question but the comments here are very helpful understanding this concept:

https://statmodeling.stat.columbia.edu/2021/04/12/relative-vs-absolute-risk-reduction-500-doctors-want-to-know/

“We are fortunate to live in a time when the ARR of a smallpox vaccine is zero. Even one with an RRR of 100%. But that is largely because a high-RRR vaccine was administered globally for decades when any measure of the ARR was vanishingly close to zero.”