In this March 16, 2020, file photo, a subject receives a shot in the first-stage safety study clinical trial of a potential vaccine by Moderna for COVID-19, the disease caused by the new coronavirus, at the Kaiser Permanente Washington Health Research Institute in Seattle. According to results released on Tuesday, July 14, 2020, early-stage testing showed the first COVID-19 vaccine tested in the U.S. revved up people’s immune systems the way scientists had hoped. The vaccine is made by the National Institutes of Health and Moderna Inc. (AP Photo/Ted S. Warren, File)
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