Twenty-nine COVID-19 vaccine recipients in the United States have suffered serious allergic reactions after receiving the shot, health officials said Wednesday.
The Centers for Disease Control said that anaphylaxis, a potentially life-threatening allergic reaction, occurred among recipients of both the Moderna and Pfizer vaccines, though officials stressed that it was a “rare outcome” and no deaths were reported.
“As you can imagine, there are tremendous efforts underway to understand what may be the cause of these allergic reactions,” said Dr. Nancy Messonnier, director of the agency’s National Center for Immunization and Respiratory Diseases, told reporters.
Messonnier said they’re still collecting information about all of the anaphylaxis cases — particularly with the Moderna vaccine since it’s accounted for fewer of the 4.8 million doses administered so far.
The agency revealed in a report Wednesday that there had been 21 anaphylaxis cases out of 1.9 million people who had received the first dose of the Pfizer vaccine.
Seventeen of the 21 people had