The chief scientific adviser for Operation Warp Speed said the frequency of allergic reactions to the Pfizer-BioNTech coronavirus vaccine is higher than what would be expected for other blows, according to a report.
Dr. Moncef Slaoui said the last time he was updated on allergic reactions was on Tuesday, when there were six cases, and added that data on COVID-19 immunizations remain behind the actual number, CNN reported.
“This frequency, as it was yesterday, is higher than what could be expected with other vaccines,” he said.
Slaoui said discussions are underway between vaccine manufacturers and the National Institutes of Health to consider conducting clinical trials of vaccines in highly allergic populations, such as people who should always wear an EpiPen anti-allergic drug.
On Monday, an official at the National Institute of Allergy and Infectious Diseases said the United States was looking at why some people suffered severe allergic reactions shortly after receiving the shot with Pfizer.
Alkis Togias, head of NIAID’s allergy, asthma and respiratory biology branch, told CNBC that “several hundred people” with a history of severe allergic reactions will be involved in a study.