CNN: The frequency of allergic reactions to the Pfizer Covid-19 vaccine is greater than what would be expected for other vaccines, Dr. Moncef Slaoui, chief scientific adviser for Operation Warp Speed said Wednesday.
Slaoui said the last time he was updated on allergic reactions was Tuesday, when there were six cases.
He noted that the data on coronavirus immunizations is lagging behind the actual numbers.
“That frequency, as it stood yesterday, is superior to what one would expect with other vaccines,” he said.
Slaoui said there are discussions between the vaccine makers and the National Institutes of Health to consider running clinical trials of Covid-19 vaccines in very allergic populations, such as those who have to carry an EpiPen with them at all times.
He said a trial could help understand the rate of allergic reactions and what is provoking them.