We thought it was just a respiratory virus... we were wrong

In late January, when hospitals in the United States confirmed the presence of the novel coronavirus, health workers knew to watch for precisely three symptoms: fever, cough, and shortness of breath. But as the number of infections climbed, the symptom list began to grow.

Now researchers at UC San Francisco and around the world have begun taking a closer look at this dizzying array of symptoms to get at the disease’s root causes.

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