About: SARS-CoV-2 serosurvey in Health Care Workers of the Veneto Region

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An Entity of Type : schema:ScholarlyArticle, within Data Space : covidontheweb.inria.fr associated with source document(s)

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type	Academic Article research paper schema:ScholarlyArticle
isDefinedBy	Covid-on-the-Web dataset
title	SARS-CoV-2 serosurvey in Health Care Workers of the Veneto Region
Creator	Plebani, Andrea, Padoan Cascio Giuliana, Lo Elena, Schievano Elena, Vecchiato Giorgio, Palù Giuseppe, Lippi Mario, Plebani Stefano, Porru Ugo, Fedeli
source	MedRxiv
abstract	Background: The ongoing outbreak of coronavirus disease (COVID-19) caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) poses formidable challenges to all health care systems. Serological assays may improve disease management when appropriately used, for better understanding the antibody responses mounted upon SARS-CoV-2 infection and for assessing its real prevalence. Although testing the whole population is impratical, well-designed serosurveys in selected subpopulations in specific risk groups may provide valuable information. Aim: we evaluated the prevalence of SARS-CoV-2 infection in health care workers who underwent molecular testing with reverse transcription real-time polymerase chain reaction (rRT-PCR) in the main hospitals of the Veneto Region by measuring specific antibodies (Abs). Methods: both IgM and IgG antibodies against SARS-Cov-2 S-antigen and N-protein were measured using a validated chemiluminescent analytical system (CLIA) called Maglumi 2000 Plus (New Industries Biomedical EngineeringCo., Ltd [Snibe], Shenzhen, China) Results: A total of 8285 health care workers were tested. SARS-CoV-2 specific antibodies (IgM, IgG or both) were detectable in 378 cases (4.6%, 95% CI 4.1-5.0%). Seroconversion was observed in 4.4% women and 5% men, but the difference was not significant. Although detectable antibodies were found in all severe COVID-19 patients (100%), lower seropositivity was found in mild disease (83%) and the lowest prevalence (58%) was observed in asymptomatic subjects. Conclusion: Seroprevalence surveys are of utmost importance for understanding the rate of population that has already developed antibodies against SARS-CoV-2. The present study has the statistical power to define precisely the circulation of SARS-CoV-2 in a cohort of health workers in our region, with its prevalence (4.6%) reflecting a relatively low circulation. Symptomatic individuals or those hospitalized for medical care were 100% antibody positive, whilst Abs were only detectable in 58% of asymptomatic carriers.
has issue date	2020-07-24(xsd:dateTime)
bibo:doi	10.1101/2020.07.23.20160457
has license	medrxiv
sha1sum (hex)	747474ab789082824aff0647a0ea063607c85b6c
schema:url	https://doi.org/10.1101/2020.07.23.20160457
resource representing a document's title	SARS-CoV-2 serosurvey in Health Care Workers of the Veneto Region
resource representing a document's body	covid:747474ab789082824aff0647a0ea063607c85b6c#body_text
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