At least 29 people vaccinated with mRNA-based Covid-19 shots in the US developed anaphylaxis - a "life-threatening" allergic reaction that comes on within minutes of receiving the intramuscular injection. A report on the CDC website lists 21 such cases but CDC officials clarified in a call with reporters that the number has been updated to 29 as of Wednesday.
The CDC is recommending that vaccine locations must screen for contraindications before the shots are given and must-have supplies of epinephrine ready to treat people experiencing anaphylaxis symptoms.
By December 23, 2020, the CDC reported there were a total of 4,393 (0.2 percent) "adverse events" among 18,93,360 first doses of Pfizer-BioNTech Covid-19. Vaccinations in America began on December 14. So far, two vaccines have received emergency approval from the US Food and Drug Administration -- Pfizer-BioNTech and Moderna.
(This story was published from a syndicated feed. Only the headline and picture has been edited by FIT)
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