A lot of people are asking the question, so I think it's useful to point out that a vaccine that prevents 90% of infections would be sufficient for herd immunity in most cases
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Those two statements are contradictory. It is rare that a single paper provides a definitive answer to such a broad question. Nevertheless, case numbers for vaccine-preventable disease demonstrate the effect quite well across the world http://www9.health.gov.au/cda/source/cda-index.cfm …
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What do you mean by that? We can demonstrate that vaccines prevent infection, and causally link them to a reduction in cases
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Sanitation does prevent infections
2:51 PM - 9 Nov 2020
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