February 26, 2024

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Allergic Reaction: Pfizer’s COVID-19 Vaccine Ten Times than Flu vaccine

Allergic Reaction: Pfizer’s COVID-19 Vaccine Ten Times than Flu vaccine

Allergic Reaction: Pfizer’s COVID-19 Vaccine Ten Times than Flu vaccine . U.S. CDC: Allergic reaction rate of Pfizer’s COVID-19 vaccine  about one of 100,000.  Ten times higher than flu vaccine.

The US Centers for Disease Control and Prevention (CDC) issued a document on January 6, 2021 local time, stating that the incidence of allergic reactions after the new coronavirus pneumonia vaccine is about one in 100,000, which is much higher than that of the flu vaccine, but it is still at a very rare level.


Allergic Reaction: Pfizer's COVID-19 Vaccine Ten Times than Flu vaccine


The data of this study is derived from the report of 1.9 million vaccine injections in the United States from December 14, 2020 to December 23. During this time period, only Pfizer has a COVID-19 vaccine on the market. After the injection, a total of 175 suspected allergic reactions were reported, and finally 21 cases were confirmed to be caused by the vaccine, which is equivalent to 11 cases per million people. In contrast, the previous flu vaccine allergic reaction rate was about 1.3 cases per million people, a 10-fold difference.

Of the 21 allergic cases, 17 had a history of allergic reactions to drugs, food, and insect bites. The average time for the patients to develop an allergic reaction was about 13 minutes. All of them received adrenaline treatment after the allergic reaction, and all of them were successfully relieved.

This report only contains allergy cases related to Pfizer vaccine, but now there are reports of allergic reactions to Moderna’s COVID-19 vaccine. Dr. Nancy Messonnier, director of the National Center for Immunization and Respiratory Diseases of the CDC in the United States, pointed out that we still do not know which component of the vaccine caused the allergic reaction, and further investigation is under way. The current speculation may be that the polyethylene glycol component of the two vaccines is the culprit of allergies.

The CDC recommends that if someone has a clear allergic reaction to a known component of the vaccine (such as polyethylene glycol), they should not get the vaccine; if a severe allergic reaction occurs after the first dose, they should not get the second dose.

Medical staff should be trained to correctly identify and respond to vaccine allergic reactions; medical institutions should be equipped with first-aid measures such as pre-installed adrenaline; people who have a history of allergic reactions to vaccine products or any other causes of allergic reactions should be vaccinated You need to observe for 30 minutes after the vaccine, and you will be treated with adrenaline if you have an allergy. Medical staff should also explain to patients that if allergic reactions occur after discharge, they should return to the hospital for treatment as soon as possible.

The high-risk population of new coronavirus pneumonia is at high risk of death and has limited treatment options. Widespread vaccination is an important means of controlling this epidemic. Although the allergic reaction rate of the n COVID-19 vaccine is much higher than that of the flu vaccine, it is still at a very rare level, and the benefits of the vaccine outweigh the potential risks. The CDC and the U.S. Food and Drug Administration (FDA) will continue to monitor adverse events including allergic reactions, and regularly evaluate the benefits and risks of vaccination in the context of epidemiological development.

(source:internet, reference only)

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