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How much % is needed for #HerdImmunity? Not 60-70%, probably 10-20%. It depends on the variance in susceptibility - not everybody has the same risk to get infected. COVID takes the low-hangig fruits first.…
...and after infecting the "low hanging fruits", R will decline, as it gets harder for the virus to replicate.

That's a "trivial" fact that was overseen by our top virologist, but is now discussed by main stream epidemologist

Variance in susceptibility:
1. Biological - we have innate immunity, that works for one individual better than another. On diamond princess, only 1/4 got infected.…

2. Behivorial - Robinson Crusoe has another susceptibility than NYC metro user.
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