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World 07 Mar 2021 | 5:38 AM

U.S. scientists doubtful of one-shot regimen for Pfizer, Moderna COVID vaccines - WSJ

(Reuters) - U.S. scientists are skeptical of a one-shot regimen for Pfizer Inc and Moderna Inc COVID-19 vaccines, saying there isn't enough evidence that a single dose provides long-term protection, the Wall Street Journal reported