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FILE – In this March 16, 2020, file photo, a pharmacist gives Jennifer Haller, left, the first shot in the first-stage safety study clinical trial of a potential vaccine for COVID-19, the disease caused by the new coronavirus, at the Kaiser Permanente Washington Health Research Institute in Seattle. The vaccine by Cambridge, Massachusetts-based Moderna Inc., generated antibodies similar to those seen in people who have recovered from COVID-19 in a study volunteers who were given either a low or medium dose. (AP Photo/Ted S. Warren, File)