herd immunity depends on the RO.
its not automatically 60 percent
and if you isolate those with pre-existing the RO its is of course much lower.
so today you provided a new Idea... a dynamic RO number...
Good, you are getting closer to what I have been saying.
now CA vs New York vs some other state...
you really think we should be looking at this country by country...
Finally,
I looked at the articles on germany...
on I read said they were not even close to testing everyone.
they had plenty of problems early and their testing improved but they had long way to go.
I would like to see the articles you are referencing.
Based on the raw R0 of COVID-19 the minimum percentage set for herd immunity has been set for about 60%. No country is anywhere near this percentage at this point.
I have always outlined that "R0" is dynamic. There are other names for R0 when mitigation is involved. R0 is normally the raw number.
If you have good Contact tracing then you do not have to come close to testing everyone. South Korea proved this. You only have to test people close to the transmission chains.
Multiple articles on Germany's successful response to COVID-19 can easily be found. You can start here -
It was the saltshaker: How Germany meticulously traced its coronavirus outbreak
https://www.weforum.org/agenda/2020...meticulously-traced-its-coronavirus-outbreak/