Incidence and management of anaphylactic reactions due to Covid-19 Astrazeneca vaccination at Hanoi Medical University

Nguyễn Minh Nguyên , Hoang Bui Hai

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Abstract

The purpose of this study is to describe the incidence of anaphylactic reactions after Oxford/AstraZeneca vaccination and management of such reactions. A total of 51,058 people received the first dose of Oxford/AstraZeneca vaccine. Of 48 people (0.0094%) who had anaphylactic reaction of any degree, 58.3% had a history of allergies. The most common symptom was rash (96.8% of reactions). 87.5% of anaphylactic reactions happened within the first 24 hours with 45.2% happened within the first 30 minutes. One case of grade 3 anaphylaxis and two cases of grade 2 anaphylaxis all occurred within 30 minutes of vaccination. Four cases required intramuscular adrenaline injection and one was maintained with adrenaline infusion. All cases with anaphylactic reaction were administered methylprednisolone 40mg and diphenhydramin 10mg. 16.7% of rashes reappeared following the initial treatment. All patients were stable after discharged. AstraZeneca vaccination is safe and anaphylactic reaction management is successful.

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References

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