This is complete and utter nonsense. If cases are rising+accelerating, BY DEFINITION the disease has not reached a herd immunity threshold of any kind https://t.co/dJCj3MlFac
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so why isn't it already a pre-print then?
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You'd have to ask the authors that. Most likely because they submitted to a journal with a copyright policy that prevents preprints like NEJM
End of conversation
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