The Food and Drug Administration (FDA) is investigating allergic reactions to the Pfizer coronavirus vaccine that were reported in multiple states after it began to be administered this week.
Peter Marks, director of the FDA’s Center for Biologics Evaluation and Research, told reporters late Friday that the reactions had been reported in more than one state besides Alaska and that the FDA is probing five reactions.
“We are working hand in hand with the Centers for Disease Control and Prevention (CDC), and we’ve actually been working closely with our United Kingdom colleagues, who of course reported the allergic reaction. I think we’ll be looking at all the data we can from each of these reactions to sort out exactly what happened, and we’ll also be looking to try to understand which component of the vaccine might be helping to produce them,” Marks said.
“I think we have at this point the right … mitigation strategy with the availability of treatment for a severe allergic reaction being at the ready, and we’ll continue to monitor it very closely,” he added.
Marks said the FDA was not certain what caused the reactions but indicated a chemical called polyethylene glycol, which is present in the vaccines produced by Pfizer and BioNTech as well as by Moderna “could be the culprit.” He added that the reaction some people have experienced could be more common than once thought.
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Source: the Hill