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by mr_mitm 1725 days ago
I thought this was simple math. The reproduction value R of the original type was estimated to be around 3 (one sick person infects on average three other persons). So to get this below 1, we need a vaccination rate of around 2/3 (1-1/R). The delta variant has a higher R of 6-8, so we may need as much as 90% of the population to be vaccinated. It's completely plausible and has nothing to do with lying.
2 comments

The lying is that the numbers have been changing, by his own admission, based on what he thought the American public should hear. If it is such "simple math", and the number is 90%, then Fauci saying 70% when he knew that was wrong is lying.
The R0 changed: initial WHO estimates were (1.4, 2.4); now multiple studies have a mean of 5.08 [1]. Thus the simple math changed. 60% likely does grant herd immunity at an R0 of 2.5; it does not for delta.

[1] https://academic.oup.com/jtm/advance-article/doi/10.1093/jtm...

> Dr. Fauci acknowledged that he had slowly but deliberately been moving the goal posts. He is doing so, he said, partly based on new science, and partly on his gut feeling that the country is finally ready to hear what he really thinks.

Dr fauci himself admitted that he was giving bad numbers based on what he wanted the American public to hear.

This is the whole disconnect. The people like Fauci that we are supposed to blindly trust are clearly willing to deceive in order to satisfy their own goals. That's why people distrust him.

The Delta variant is sufficiently contagious that we can't achieve any real herd immunity through vaccination. It's still important to get vaccinated to protect yourself.

https://www.businessinsider.com/delta-variant-made-herd-immu...

Those calculations of herd immunity threshold percentages were usually over simplified based on the assumption that immunity is a binary condition. But in reality while vaccinated people are less likely to suffer severe symptoms they can still get infected and spread the virus.