> Vaccinating the entire population protects the vulnerable. Only if it prevents... | Hacker News

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Izkata 3 months ago | parent | context | favorite | on: Why were Covid vaccine trials so fast?

> Vaccinating the entire population protects the vulnerable.

Only if it prevents spread, which was still an open question while it was being pushed in early 2021 and known to not work by the end of 2021.

bryanlarsen 3 months ago [–]

It didn't work well because the vaccination rate didn't reach herd immunity levels. It still helped.

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