Anaphylaxis Is Pharmacovigilance Focus As Moderna Vaccine Distribution Begins
Executive Summary
No reactions have been observed with Moderna’s COVID vaccine, but none were seen in Pfizer’s trial either; proprietary components may complicate effort to find cause of anaphylactic reactions, but FDA and CDC officials express confidence in surveillance systems, and CBER’s Peter Marks suggests polyethylene glycol may be possible culprit.
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