US begins study on allergic reaction risk in Moderna, Pfizer vaccines
By REUTERSUpdated: APRIL 7, 2021 17:27Vials with Pfizer-BioNTech and Moderna coronavirus disease (COVID-19) vaccine labels are seen in this illustration picture taken March 19, 2021. (photo credit: REUTERS/DADO RUVIC/ILLUSTRATION/FILE PHOTO)
The US National Institutes of Health said on Wednesday it had begun a mid-stage study to determine the risk of allergic reactions to COVID-19 vaccines made by Moderna Inc and Pfizer Inc.Several allergic reaction incidents, including serious episodes, known as anaphylaxis, have been reported in the US after vaccinations of Pfizer/BioNTech and Moderna shots.In January, the US Centers for Disease Control and Prevention said allergic reactions are occurring at a rate of 11.1 per 1 million vaccinations.The study, funded by the National Institute of Allergy and Infectious Diseases, will enroll 3,400 adults between the ages of 18 to 69, with about 60% of participants having a history of severe allergic reactions to food, insect stings or immunotherapy.The goal of the trial is to access the proportion of participants who have a systemic allergic reaction within 90 minutes after injection.The agency expects to report data later this summer.
