ArticlePloS one2022
Trends in social exposure to SARS-Cov-2 in France. Evidence from the national socio-epidemiological cohort-EPICOV.
Article in PloS one, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05336604 (Epidémiologie et Conditions de Vide liées au Covid-19 STUDY OF THE COVID-19), which is not on this map. Cited by 21 papers, 2 of them syntheses that pooled it.
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The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Epidémiologie et Conditions de Vide liées au Covid-19 STUDY OF THE COVID-19 (SARS-CoV-2) EPIDEMIC AND SOCIO-ECONOMIC LIVING
Who cites it
21 citing papers in PubMed, 2 syntheses or guidelines pooled it.
- Differential COVID-19 infection rates in children, adults, and elderly: Systematic review and meta-analysis of 38 pre-vaccination national seroprevalence studies.Journal of global health · 2023Pooled it
- Age-stratified infection fatality rate of COVID-19 in the non-elderly population.Environmental research · 2023Pooled it
- Equity challenges in public health responses during the COVID-19 Pandemic: mixed-methods study of Travellers' experiences in Nouvelle-Aquitaine, France.International journal for equity in health · 2026Article
- Evolution with age of the relationship between sex and post-COVID symptoms: a population-based cohort study.BMC medicine · 2026Article
- Essential worker status, gender, and migration background disparities in COVID-19: An intersectional approach.Journal of migration and health · 2026Article
- Work-Related Exposures Mediate Occupational Class Disparities in SARS-CoV-2 Infection in France.International journal of public health · 2026Article
- A population-based case-control study of COVID-19: methodological considerations on the role of testing bias.Journal of public health (Oxford, England) · 2025Article
- Revisiting the link between COVID-19 incidence and infection fatality rate during the first pandemic wave.Scientific reports · 2025Article
- Temporal changes in the risk of six-month post-COVID symptoms: a national population-based cohort study.American journal of epidemiology · 2025Article
- Social inequalities in SARS-CoV-2 infection in high income countries: highlighting the need for an intersectional perspective in quantitative research.Frontiers in public health · 2025Review
- Article
- COVID-19 among migrants, refugees, and internally displaced persons: systematic review, meta-analysis and qualitative synthesis of the global empirical literature.EClinicalMedicine · 2024Article
- Risk Factors for Community and Intrahousehold Transmission of SARS-CoV-2: Modeling in a Nationwide French Population-Based Cohort Study, the EpiCoV Study.American journal of epidemiology · 2024Article
- How European Research Projects Can Support Vaccination Strategies: The Case of the ORCHESTRA Project for SARS-CoV-2.Vaccines · 2023Article
- Article
- Dried blood spot eluates are suitable for testing of SARS-CoV-2 IgG antibodies targeting Spike protein 1 and Nucleocapsid protein.Biochemistry and biophysics reports · 2023Article
- Morbidity and mortality in a prospective cohort of people who were homeless during the COVID-19 pandemic.Frontiers in public health · 2023Observational
- Comparison of a Blood Self-Collection System with Routine Phlebotomy for SARS-CoV-2 Antibody Testing.Diagnostics (Basel, Switzerland) · 2022Article
- Infection fatality rate of COVID-19 in community-dwelling elderly populations.European journal of epidemiology · 2022Article
- Use of health care services among people with Covid-19 symptoms in the first pandemic peak in France.PloS one · 2022Article
Corrections and comments
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Authors and funding
18 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundWe aimed to study whether social patterns of exposure to SARS-CoV-2 infection changed in France throughout the year 2020, in light to the easing of social contact restrictions.
methodsA population-based cohort of individuals aged 15 years or over was randomly selected from the national tax register to collect socio-economic data, migration history, and living conditions in May and November 2020. Home self-sampling on dried blood was proposed to a 10% random subsample in May and to all in November. A positive anti-SARS-CoV-2 ELISA IgG result against the virus spike protein (ELISA-S) was the primary outcome. The design, including sampling and post-stratification weights, was taken into account in univariate and multivariate analyses.
resultsOf the 134,391 participants in May, 107,759 completed the second questionnaire in November, and respectively 12,114 and 63,524 were tested. The national ELISA-S seroprevalence was 4.5% [95%CI: 4.0%-5.1%] in May and 6.2% [5.9%-6.6%] in November. It increased markedly in 18-24-year-old population from 4.8% to 10.0%, and among second-generation immigrants from outside Europe from 5.9% to 14.4%. This group remained strongly associated with seropositivity in November, after controlling for any contextual or individual variables, with an adjusted OR of 2.1 [1.7-2.7], compared to the majority population. In both periods, seroprevalence remained higher in healthcare professions than in other occupations.
conclusionThe risk of Covid-19 infection increased among young people and second-generation migrants between the first and second epidemic waves, in a context of less strict social restrictions, which seems to have reinforced territorialized socialization among peers.
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