U.S. federal health department officials said Jan. 6 that the probability of a serious allergic reaction is now higher than that of the flu vaccine in cases where the new coronavirus (COVID-19, also known as the Chinese communist virus) vaccine has been administered.
Centers for Disease Control and Prevention (CDC) officials said the probability of an allergic reaction to the vaccine is 11.1 percent per million, compared with 1.3 percent per million for the flu vaccine.
Nancy Messonnier, director of the CDC’s National Center for Immunization and Respiratory Diseases, told the media by phone, “The probability of an allergic reaction to the new crown pneumonia vaccine may appear to be higher than the flu vaccine, but I would reassure everyone that the probability is still very small.”
Between Dec. 14 and Dec. 23, 21 of the first 1.89 million people who received the vaccine had severe allergic reactions, with an average age of 40 years, and 17 of them had a history of allergies or allergic reactions. The average time between vaccination and the onset of a severe allergic reaction was 13 minutes, with most people within 15 minutes.
The CDC reported data showing that 20 of these people recovered and were discharged from the hospital. The vaccine was developed in collaboration with Pfizer Pharmaceuticals (USA) and BioNTech Pharmaceuticals (Germany).
In addition, 86 people had non-serious allergic reactions, 61 were considered to be non-allergic adverse reactions, and 7 are under observation.
There is no federal database of confirmed allergic reactions, and data from the past two weeks are not yet covered in the report. Approximately 3.4 million doses of vaccine were administered during the time period covered in the report.
As of Jan. 5, the federal agency had received reports mentioning hundreds of people who were taken to emergency rooms for medical attention after vaccine injections and more than 1,000 people who experienced adverse reactions.
Masonnier said the CDC is continuing to adjust its recommendations based on reports of adverse reactions. the CDC recently said that people who have experienced an adverse reaction after a Newcastle pneumonia vaccination should not be reinjected, and also instructed those involved to be concerned about the vaccine recipient’s history of vaccine allergy or past history of allergic reactions triggered by any cause 30 minutes after the vaccine was administered. The typical observation time is 15 minutes.
CDC officials cautioned in December that people with a history of allergic reactions to any vaccine should not be given the New Crown pneumonia vaccine.
But Masonnier said, “Our vaccine safety system has not yet received any signals of concern, suggesting that the known and potential benefits of this new coronary pneumonia vaccine currently outweigh its known and potential risks.”
“But that doesn’t mean there won’t be serious health problems in the future.” She said.
The CDC and the Food and Drug Administration (FDA) are working with clinicians to review reports of serious adverse reactions to see if they are related to the vaccine. Masonnier said many of the adverse reactions could be coincidental.
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