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

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U.S. scientists are sceptical 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.

“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.

Main Photo: Used vaccine ampoules that contained Pfizer-BioNTech, Moderna and AstraZeneca Covid-19 Vaccines. EPA-EFE/Johan Nilsson/TT

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