Observational studyInternational journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases2022
Adverse events following COVID-19 vaccination in South Korea between February 28 and August 21, 2021: A nationwide observational study.
Observational study in International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
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Who cites it
15 citing papers in PubMed, 1 synthesis or guideline pooled it, 32 citations in OpenAlex.
- Immunogenicity, effectiveness, and safety of COVID-19 vaccines among children and adolescents aged 2-18 years: an updated systematic review and meta-analysis.World journal of pediatrics : WJP · 2023Pooled it
- Post vaccination acute kidney injury and other renal complications after COVID-19 and influenza vaccination.World journal of nephrology · 2026Article
- Sex, Age, and COVID-19 Vaccine Characteristics Associated with Adverse Events After Vaccination and Severity: A Retrospective Analysis.Infectious disease reports · 2025Article
- Safety and immunogenicity of fractional COVID-19 vaccine doses in Nigerian adults: A randomized non-inferiority trial.Scientific reports · 2025Article
- Broad-Spectrum Adverse Events of Special Interests Based on Immune Response Following COVID-19 Vaccination: A Large-Scale Population-Based Cohort Study.Journal of clinical medicine · 2025Article
- Psychiatric adverse events following COVID-19 vaccination: a population-based cohort study in Seoul, South Korea.Molecular psychiatry · 2024Article
- Acute pancreatitis complicated with diabetic ketoacidosis following COVID-19 mRNA vaccination: a case report.Journal of rural medicine : JRM · 2024Article
- Cholera and COVID-19 pandemic prevention in multiple hotspot districts of Uganda: vaccine coverage, adverse events following immunization and WASH conditions survey.BMC infectious diseases · 2023Article
- Vertigo and Dizziness After Coronavirus Disease-2019 Vaccination: A Nationwide Analysis.The journal of international advanced otology · 2023Article
- Occurrence of erythema multiforme following COVID-19 vaccination: a review.Clinical and experimental vaccine research · 2023Review
- Risk of Coronavirus Disease 2019 Messenger RNA Vaccination-Associated Myocarditis and Pericarditis - A Systematic Review of Population-Based Data.Risk management and healthcare policy · 2023Review
- Case mistaken for leukemia after mRNA COVID-19 vaccine administration: A case report.World journal of clinical cases · 2022Article
- Significance of digestive symptoms after COVID-19 vaccination: A retrospective single-center study.The American journal of emergency medicine · 2022Article
- Acute pancreatitis as an adverse effect of COVID-19 vaccination.SAGE open medical case reports · 2022Article
- Thrombotic events with or without thrombocytopenia in recipients of adenovirus-based COVID-19 vaccines.Frontiers in cardiovascular medicine · 2022Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors at 1 institution in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectivesTo investigate the clinical characteristics of adverse events (AEs) after COVID-19 vaccination in patients in South Korea.
designData from the Korean Disease Control and Prevention Agency on AEs from 4 COVID-19 vaccines, including AZD1222, BNT162b2, JNJ-78436735, and mRNA-1273, from February 26, 2021, to August 21, 2021, were assessed. The epidemiological characteristics, clinical symptoms, severity, complications, and mortality were descriptively analyzed.
resultsOverall, 36.3 million individuals who completed the COVID-19 vaccination doses during the study period were included, and 153,183 AEs were reported. Most AEs occurred after the first dose (80.6%) and within a day (63.2%) after vaccination. Of the AEs, 95.5% were nonsevere cases; however, 4.5% were severe. Most mild AEs showed a similar frequency across all age groups, but major severe AEs and mortality events increased with age.
conclusionsAlthough there were differences in the frequency of occurrence, various adverse reactions were confirmed in using all 4 COVID-19 vaccines, even with the BNT162b2 (Pfizer-BioNTech) vaccine. Caution is needed, and further research should be continuously conducted.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.