Help me with the math here. A "normal" virus that infects every age group equally would require 60-70% herd/vaccination immunity to stop the spread. But what about a virus that is massively biased toward 20% of the population? If we vaccinate around 80% of that 20%, are we done?
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The overall death rate has fallen much stronger and while this is affected by lockdowns, too, the BioNTech/Pfizer vaccine reduces deaths by 72% after the first dose in this (non-randomized) study: https://www.nejm.org/doi/10.1056/NEJMoa2101765 …pic.twitter.com/FZK6XWqM8n
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I checked death rate for closed cases (cases that had outcome so no delay) in Israel. December 0.8%, January 0.7%, February 0.59%. It is continuing to drop but not many people left to vaccinate.
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