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Tim Harford explains the numbers and statistics in the news and in life

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More or Less: Why are US Covid cases falling?

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Why are US Covid cases falling?

27/02/2021 GMT

BBC World Service - More or Less, Why are US Covid cases falling?

From herd immunity to the weather, Tim Harford explores the theories

Cases of Covid 19 began to soar in the US in the autumn. By early January there were around 300,000 new cases a day. But since then the numbers have fallen steeply. What caused this dramatic drop? From herd immunity to the weather, Tim Harford explores some of the theories with Derek Thompson of The Atlantic magazine and Professor Jennifer Dowd, deputy director of the Lever Hume Centre for Demographic Science at the University of Oxford.


(People with face masks walk through The Mall in Central Park, New York City. Credit: Noam Galai /Getty Images)

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