WSJ: US scientists doubtful of one-shot regimen for Pfizer, Moderna Covid-19 vaccines

Published at 04:18 am March 7th, 2021

Syringes with doses of Pfizer vaccine against the coronavirus disease (Covid-19) sit in a basket waiting to be administered at Richmond raceway in Richmond, Virginia, US, March 4, 2021 Reuters

An FDA official said it is essential that these vaccines be used as authorized

US 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 here.

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“It is essential that these vaccines be used as authorized by FDA in order to prevent Covid-19 and related hospitalizations and death,” Peter Marks, director of the FDA’s Center for Biologics Evaluation and Research, told the Journal.