Nurse practitioner Hope Alfonso, 34, is given the Pfizer coronavirus disease (COVID-19) vaccine at Dignity Health Glendale Memorial Hospital and Health Center in Glendale, California, December 17, 2020.Lucy Nicholson | ReutersThe 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 …
