Covid-19: How do you calculate herd immunity? | podcast
by Presented by Ian Sample and produced by Madeleine from Science | The Guardian on (#53T8T)
Herd immunity represents the percentage of people in a population who need to be immune to a disease in order to protect those who aren't. Early on in the pandemic, researchers estimated the herd immunity threshold for Covid-19 to be 60%. Following a question from a listener, Ian Sample speaks to Rachel Thomas to explore the maths and find out exactly how herd immunity is calculated
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