ArticleViruses2022
Seroprevalence of SARS-CoV-2 IgG Antibodies and Factors Associated with SARS-CoV-2 IgG Neutralizing Activity among Primary Health Care Workers 6 Months after Vaccination Rollout in France.
Article in Viruses, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04808986 (Séroprévalence Des IgG dirigés Contre le SARS-CoV-2 Chez Les Professionnels de santé en Soins Primaires et Leurs Contacts au Sein Des ménages), which is not on this map. Cited by 5 papers.
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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
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.
Séroprévalence Des IgG dirigés Contre le SARS-CoV-2 Chez Les Professionnels de santé en Soins Primaires et Leurs Contacts au Sein Des ménages
Who cites it
5 citing papers in PubMed, 9 citations in OpenAlex.
- SARS-CoV-2 infection prevalence and associated factors among primary healthcare workers in France after the third COVID-19 wave.Scientific reports · 2024Article
- Antibody Responses to SARS-CoV-2 among Health Care Workers in North-Eastern Tanzania.The East African health research journal · 2024Article
- Nasopharyngeal Viral Load Is the Major Driver of Incident Antibody Immune Response to SARS-CoV-2 Infection.Open forum infectious diseases · 2023Article
- Clinical usefulness of testing for severe acute respiratory syndrome coronavirus 2 antibodies.European journal of internal medicine · 2023Review
- Article
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Authors and funding
27 authors at 8 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
We aimed to investigate the immunoglobulin G response and neutralizing activity against severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) among primary health care workers (PHCW) in France and assess the association between the neutralizing activity and several factors, including the coronavirus disease 2019 (COVID-19) vaccination scheme. A cross-sectional survey was conducted between 10 May 2021 and 31 August 2021. Participants underwent capillary blood sampling and completed a questionnaire. Sera were tested for the presence of antibodies against the nucleocapsid (N) protein and the S-1 portion of the spike (S) protein and neutralizing antibodies. In total, 1612 PHCW were included. The overall seroprevalences were: 23.6% (95% confidence interval (CI) 21.6-25.7%) for antibodies against the N protein, 94.7% (93.6-95.7%) for antibodies against the S protein, and 81.3% (79.4-83.2%) for neutralizing antibodies. Multivariate regression analyses showed that detection of neutralizing antibodies was significantly more likely in PHCW with previous SARS-CoV-2 infection than in those with no such history among the unvaccinated (odds ratio (OR) 16.57, 95% CI 5.96-59.36) and those vaccinated with one vaccine dose (OR 41.66, 95% CI 16.05-120.78). Among PHCW vaccinated with two vaccine doses, the detection of neutralizing antibodies was not significantly associated with previous SARS-CoV-2 infection (OR 1.31, 95% CI 0.86-2.07), but was more likely in those that received their second vaccine dose within the three months before study entry than in those vaccinated more than three months earlier (OR 5.28, 95% CI 3.51-8.23). This study highlights that previous SARS-CoV-2 infection and the time since vaccination should be considered when planning booster doses and the design of COVID-19 vaccine strategies.
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