What It Would Take for Herd Immunity to Stop the Coronavirus Pandemic – The Wall Street Journal

The principle of herd immunity is at the heart of worldwide vaccination efforts and discussions about next steps in fighting the Covid-19 pandemic and reviving economies. For the pandemic to stop, the coronavirus has to run out of vulnerable hosts to infect. Herd resistance occurs when sufficient individuals in a population establish an immune response, either through previous infection or vaccination, so that the infection cant spread easily and even those who arent immune have security …

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