Originally Posted by
AntiPeter
Extrapolating these numbers, it is possible the outer boroughs of NYC have already come close to herd immunity:
https://www1.nyc.gov/assets/doh/down...9-data-map.pdf
And if you don't want to buy the herd immunity concept in NYC that's fine. But, extrapolating these numbers to the population it's quite possible most people in NYC have already been infected.
It appears to me this is saying some areas have 60-80% of the tests coming back positive. That does not mean that percentage of people would test positive. Those many have had a much more restrictive number of test.
The inner areas that are 10-20% positives may have a much greater, more broad testing.
As an example, if you have a population of 100 and you test 10 people, with 8 positives, you would have 80% of tests positive.
On the other hand, if you have a population of 100 and you test 80 people, with 8 positives, you would have 10% of tests positive.
With only 8% of the total population testing positive, neither of these examples would lead to a conclusion of herd immunity. Without the percentage of the population being tested, this data is meaningless.