Support WBURThe U.S. Vaccination Rate Continues To SlowPlay11:15Download AudioApril 27, 2021Allison AubreyRebecca RamirezEmily KwongfacebookEmailThis picture shows vials of the single-dose Johnson & Johnson Janssen Covid-19 vaccine. (ANP/AFP via Getty Images)
This picture shows vials of the single-dose Johnson & Johnson Janssen Covid-19 vaccine. (ANP/AFP via Getty Images)