Covid-19: How close is the light at the end of the tunnel? — Tim Harford

Will it ever end? In November, we were celebrating the announcement that the BioNTech/Pfizer vaccine seemed to be highly effective against Covid-19, followed with bewildering speed by similar claims for the Sputnik V, Moderna and Oxford/AstraZeneca vaccines. Nearly three months later, hospitals are overwhelmed and the global death toll is climbing twice as fast as…

Covid-19: How close is the light at the end of the tunnel? — Tim Harford

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