Why Some People Don’t Get COVID-19 Symptoms

About three-quarters of people in the U.S. have had COVID-19 at least once, according to the latest federal estimates—but, if they were asymptomatic, some of them might not realize it.

Since the beginning of the pandemic, researchers have tried to understand why some people who are infected by the SARS-CoV-2 virus never experience telltale symptoms like a cough, sore throat, or feve…

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