PREVALENCE OF ADVERSE EFFECTS OF COVID-19 PFIZER VACCINE AMONG ADULTS AT HA NOI MEDICAL UNIVERSITY, 2021

Thị Mai Hương Phan1, Thị Thanh Xuân Lê1, Văn Thành Nguyễn1, Thị Thanh Hà Lê1, Thúy Nam Nguyễn1, Diệu Linh Hoàng1, Long Quân Hoàng1, Huyền Phương Lương1, Hồng Liên An1, Thị Quân Phạm 1, Ngọc Anh Nguyễn2, Thanh Thảo Nguyễn1, Thị Kim Nhung Tạ3, Thị Hiền Phạm 1, Quốc Doanh Nguyễn1, Thị Quỳnh Nguyễn1,
1 Hanoi medical university
2 Hanoi medical univesity
3 Hanoi medicla university

Main Article Content

Abstract

Objectives: to describe the prevalence of adverse effects of the Covid-19 Pfizer vaccine among adults at Ha Noi Medical University in 2021. Method: A cross-sectional study was conducted on 813 people from October 2021 to October 2022. Results: the rate of local effects after in 1st dose was 14.8%, 2nd dose was 40.2%. Common effects were tiredness (1st dose:10.3%, 2nd dose: 38.0 %), increasing pain impress (1st dose:7.8%, 2nd dose: 18.0 %), fever < 38.5°C (1st dose: 3.7%, 2nd dose: 19.8 %). The dangerous effects were very low. The adverse effects of Covid 1-9 Pfizer vaccine usually occurred from 1 to 24 hours after vaccination. Conclusion: The rate of the adverse effects of Covid-19 Pfizer vaccine among adults at Ha Noi Medical University in 2021 was relatively high, but mainly common effects such as fever, tiredness and increasing pain impress.

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References

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