Published 06:05 IST, December 23rd 2020
US negotiating for millions more vaccine doses from Pfizer
Pfizer's vaccine was the first to gain approval from the Food and Drug Administration and initial shipments went to states last week. It has now been joined by a vaccine from Moderna, which was developed in closer cooperation with scientists from the National Institutes of Health.
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06:05 IST, December 23rd 2020