The U.S. is looking at why a handful of people have suffered from severe allergic reactions shortly after receiving Pfizer’s coronavirus vaccine shots, a National Institute of Allergy and Infectious Diseases official told CNBC on Monday.
The study – which is still in the early planning phases – is expected to include “several hundred” people who have a history of severe allergic reactions, said Alkis Togias, chief of the NIAID’s Allergy, Asthma, and Airway Biology Branch. His department will lead the study, which researchers hope to begin in a matter of weeks, though the timing isn’t guaranteed.
