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has treated all three COVID-19 vaccines available to Americans as an equal choice, since large studies found they all offered strong protection and early supplies were limited.
J&J’s vaccine initially was welcomed as a single-dose option that could be especially important for hard-to-reach groups like homeless people who might not get the needed second dose of the Pfizer or Moderna options.UKRAINE - 2021/01/01: In this photo illustration a medical syringe and small figures of people are seen in front of the Centers for Disease Control and Prevention (CDC) logo.