ArticleJournal of medical virology2022
Reinfection with SARS-CoV-2 in general population, South Korea; nationwide retrospective cohort study.
Article in Journal of medical virology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 3 of them syntheses that pooled it.
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Who cites it
20 citing papers in PubMed, 3 syntheses or guidelines pooled it.
- Incidence, severity, risk factors and outcomes of SARS-CoV-2 reinfections during the Omicron period: a systematic review and meta-analysis.Journal of global health · 2025Pooled it
- Risk Factors Contributing to Reinfection by SARS-CoV-2: A Systematic Review.Advances in respiratory medicine · 2023Pooled it
- COVID-19 vaccines reduce the risk of SARS-CoV-2 reinfection and hospitalization: Meta-analysis.Frontiers in medicine · 2022Pooled it
- Assessment of SARS-CoV-2 neutralizing antibody persistence using LFIC: a prevalence study after booster doses.BMC public health · 2025Article
- Effect of anti-S antibody titers on newly confirmed cases of COVID-19 in Korea: a community-based cohort study (K-SEROSMART Wave 2).BMC infectious diseases · 2025Article
- Epidemiological features and risk factors of SARS-CoV-2 reinfection: a retrospective cohort analysis in Xiamen, China.Journal of thoracic disease · 2025Article
- Incidence of SARS-CoV-2 reinfection among blood donors from two Brazilian states in the post-vaccination period: a prospective cohort study.Revista do Instituto de Medicina Tropical de Sao Paulo · 2025Article
- Estimation of outpatient SARS-CoV-2 reinfection and recurrence rates and associated factors among COVID-19 hospitalized patients over one-year old: a multicenter retrospective cohort study.BMC infectious diseases · 2024Article
- Update on Omicron variant and its threat to vulnerable populations.Public health in practice (Oxford, England) · 2024Review
- The serological IgG and neutralizing antibody of SARS-CoV-2 omicron variant reinfection in Jiangsu Province, China.Frontiers in public health · 2024Article
- Risk factors and outcomes for repeat COVID-19 infection among patients with systemic autoimmune rheumatic diseases: A case-control study.Seminars in arthritis and rheumatism · 2023Article
- Article
- Oral bemnifosbuvir (AT-527) vs placebo in patients with mild-to-moderate COVID-19 in an outpatient setting (MORNINGSKY).Future virology · 2023Article
- Risk Factors Related to COVID-19 Reinfection and Fatality During the Omicron (BA.1/BA.2) Period in Korea.Journal of Korean medical science · 2023Article
- Effects of Severe Acute Respiratory Syndrome Coronavirus Vaccination on Reinfection: A Community-Based Retrospective Cohort Study.Vaccines · 2023Article
- Phase II study of bemnifosbuvir in high-risk participants in a hospital setting with moderate COVID-19.Future virology · 2023Article
- Reinfections from SARS-CoV-2: A Retrospective Study from the Gyncentrum Genetic Laboratory in Sosnowiec, Poland, April 2020 to July 2022.Medical science monitor : international medical journal of experimental and clinical research · 2023Article
- Current and Emerging Knowledge in COVID-19.Radiology · 2023Review
- Epidemiological and clinical characteristics of COVID-19 reinfection during the epidemic period in Yangzhou city, Jiangsu province.Frontiers in public health · 2023Article
- Reinfection with SARS-CoV-2 in general population, South Korea; nationwide retrospective cohort study.Journal of medical virology · 2022Article
Corrections and comments
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Authors and funding
8 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
To better understand the epidemiology of SARS-CoV-2 reinfections, we analyzed national data from South Korean who were followed longitudinally from January 2020 to April 2022. We conducted a nationwide retrospective cohort study to estimate possible SARS-CoV-2 reinfection rates in all residents in South Korea, with at least two episodes of laboratory-confirmed SARS-CoV-2 infection by reverse-transcriptase polymerase chain reaction or rapid antigen test (RAT) performed at least 45 or more days between both episodes, between January 2020 and April 2022. There were 16 130 855 laboratory-confirmed SARS-CoV-2 cases in South Korea, with 55 841 (346.2 per 100 000; or 0.3% of all infections) cases of possible reinfections. The reinfection rate has increased from 6.0 cases per 100 000 during Pre-Delta period to 128.0 cases per 100 000 and 355.1 cases per 100 000 during Delta and Omicron periods, respectively. Persons with one dose of vaccination had the highest reinfection rate of 642.2 per 100 000, followed by unvaccinated persons (536.2/100 000) and two-dose vaccinated persons (406.3/100 000). Our finding suggests that the majority of possible reinfections occurred following the emergence of new variants.
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