WASHINGTON : Hundreds more hospitals around the country began dispensing COVID-19 shots to their workers in a rapid expansion of the U.S.
vaccination drive Tuesday, while a second vaccine moved to the cusp of government authorization.A day after the rollout of Pfizer-BioNTech's coronavirus shots, the Food and Drug Administration said its preliminary analysis confirmed the effectiveness and safety of the vaccine developed by Moderna and the National Institutes of Health.
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