Something that I think is worth explaining: The term "herd immunity" has a few different meanings, all of which are quite precise. This is an important pointpic.twitter.com/PBnK4J6ntD
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Given interventions, the size of the immune population needed for R(t) < 1 eventually is different (lower) than without interventions. This says nothing more than interventions help to get and keep an outbreak under control.
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