Allergic Reactions to COVID Vaccines Are Uncommon, Resolved on Website: CDC


By Dennis Thompson HealthDay Reporter

WEDNESDAY, Jan. 6, 2021 (HealthDay Information)

Circumstances of anaphylactic shock attributable to COVID-19 vaccines are very uncommon, primarily based on numbers from the primary week and a half of vaccinations in the USA, federal public well being officers mentioned Wednesday.

There have been 21 instances of anaphylaxis out of practically 1.9 million doses of the Pfizer-BioNTech vaccine administered within the very first days of the nationwide COVID-19 vaccination program, mentioned Dr. Nancy Messonnier, director of the Nationwide Heart for Immunization and Respiratory Illnesses on the U.S. Facilities for Illness Management and Prevention.

“We’re within the setting of two,000 COVID deaths per day. In case you make that comparability, I believe it is nonetheless an excellent worth proposition for somebody to get vaccinated,” Messonnier mentioned. “Their danger from COVID and poor outcomes from COVID continues to be greater than their danger of a extreme final result from the vaccine.”

The common price is 11.1 anaphylaxis instances per a million doses administered, which is increased than the speed of anaphylaxis for flu vaccine of 1.3 per a million doses administered, Messonnier famous.

“I suppose you can mathematically say that is 10 occasions the quantity, however I believe that misses the purpose,” Messonnier mentioned. “That is exceedingly uncommon, and I believe that’s nonetheless the message that the general public ought to be getting from this.”

Anaphylaxis happens quickly following COVID-19 vaccination, with symptom onset inside 13 minutes of receiving the shot on common, Messonnier mentioned. Seven out of 10 instances occurred inside quarter-hour of vaccination.

Of the 21 sufferers, 17 “had a documented historical past of allergic reactions or allergic reactions, together with to medicine or medical merchandise, meals and bug stings,” Messonnier mentioned.

The instances occurred with doses from a number of vaccine heaps, which implies a single batch is not in charge.

“Anybody who has a direct or allergic response to the primary dose of Pfizer or Moderna’s vaccine shouldn’t obtain the second dose,” Messonnier mentioned. “Anybody with a historical past of a direct allergic response to a vaccine or injectable remedy, and folks with a historical past of anaphylaxis because of any trigger ought to be noticed for half-hour after vaccination.”

In 19 of the 21 instances, sufferers got an epinephrine injection — customary look after anaphylactic shock. Nobody died because of their extreme allergic response, the CDC mentioned.

“We all know the best way to deal with anaphylaxis, and we have put provisions in place to make sure that, at immunization websites, the oldsters administering the vaccine are able to deal with anaphylaxis,” Messonnier mentioned.

The CDC knowledge was revealed on-line Jan. 6 within the company’s Morbidity and Mortality Weekly Report.

In a separate publication, Dr. Aleena Banerji, head of the allergy and medical immunology unit at Massachusetts Basic Hospital in Boston, and her colleagues agreed that the 2 COVID-19 vaccines accredited in the USA are secure and efficient, even for folks with meals or medicine allergic reactions.

The analysis group presents some recommendation within the Dec. 31 Journal of Allergy and Medical Immunology: In Follow, so that folks with totally different allergy histories can safely obtain their first COVID-19 vaccine.

“As allergists, we need to encourage vaccination by reassuring the general public that each [Food and Drug Administration]-approved COVID-19 vaccines are secure,” Banerji mentioned in a hospital information launch. “Our pointers are constructed upon the suggestions of U.S. regulatory companies and supply clear steps to the medical neighborhood on the best way to safely administer each doses of the vaccine in people with allergic histories.”

Individuals with a historical past of extreme allergy (anaphylaxis) to a drug or vaccine ought to communicate with their allergists earlier than being vaccinated, Banerji and her group mentioned. Nonetheless, these with extreme allergic reactions to meals, oral medicine, latex or venom can nonetheless be safely vaccinated, they famous.

Extra info

The U.S. Facilities for Illness Management and Prevention has extra about COVID-19 vaccines.

SOURCES: Nancy Messonnier, MD, director, Nationwide Heart for Immunization and Respiratory Illnesses, U.S. Facilities for Illness Management and Prevention; Massachusetts Basic Hospital, information launch, Dec. 31, 2020; Morbidity and Mortality Weekly Report, Jan. 6, 2021, on-line

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