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www.theatlantic.com The Pandemic’s Biggest Mystery Is Our Own Immune System

Editor’s Note: The Atlantic is making vital coverage of the coronavirus available to all readers. Find the collection here . There’s a joke about immunology, which Jessica Metcalf of Princeton recently told me. An immunologist and a cardiologist are kidnapped. The kidnappers threaten to shoot one of them, but promise to spare whoever has made the greater contribution to humanity. The cardiologist says…