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(Reuters) – US scientists are skeptical of a single regimen for Pfizer Inc and Moderna Inc COVID-19 vaccines, saying there is insufficient evidence that a single dose provides long-term protection , The Wall Street Journal reported here.
“It is essential that these vaccines be used in accordance with FDA clearances in order to prevent Covid-19 and associated hospitalizations and deaths,” Peter Marks, director of the Center for Biologics Evaluation and Research at the FDA, told the Journal.
Report by Maria Ponnerhath in Bengaluru; Editing by Daniel Wallis
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