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10.1371/journal.pone.0252317

http://scihub22266oqcxt.onion/10.1371/journal.pone.0252317
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34161348!8221517!34161348
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suck abstract from ncbi


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pmid34161348      PLoS+One 2021 ; 16 (6): e0252317
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  • Performance of the EUROIMMUN Anti-SARS-CoV-2 ELISA Assay for detection of IgA and IgG antibodies in South Africa #MMPMID34161348
  • Gededzha MP; Mampeule N; Jugwanth S; Zwane N; David A; Burgers WA; Blackburn JM; Grove JS; George JA; Sanne I; Scott L; Stevens W; Mayne ES
  • PLoS One 2021[]; 16 (6): e0252317 PMID34161348show ga
  • Severe Acute Respiratory Syndrome-Coronavirus 2 (SARS-CoV-2) has been identified as the causative agent for causing the clinical syndrome of COVID -19. Accurate detection of SARS-CoV-2 infection is not only important for management of infected individuals but also to break the chain of transmission. South Africa is the current epicenter of SARS-CoV-2 infection in Africa. To optimize the diagnostic algorithm for SARS-CoV-2 in the South African setting, the study aims to evaluate the diagnostic performance of the EUROIMMUN Anti-SARS-CoV-2 assays. This study reported the performance of EUROIMMUN enzyme-linked immunosorbent assay (ELISA) for semi-quantitative detection of IgA and IgG antibodies in serum and plasma samples targeting the recombinant S1 domain of the SARS-CoV-2 spike protein as antigen. Samples were collected from 391 individuals who had tested positive for SARS-CoV-2 and 139 SARS CoV-2 negative controls. Samples were stratified by number of days' post-PCR diagnosis and symptoms. The sensitivity of EUROIMMUN IgG was 64.1% (95% CI: 59.1-69.0%) and 74.3% (95% CI: 69.6-78.6%) for IgA and the specificity was lower for IgA [84.2% (95% CI: 77-89.2%)] than IgG [95.2% (95% CI: 90.8-98.4%)]. The EUROIMMUN Anti-SARS-CoV-2 ELISA Assay sensitivity was higher for IgA but low for IgG and improved for both assays in symptomatic individuals and at later timepoints post PCR diagnosis.
  • |Adult[MESH]
  • |Aged[MESH]
  • |Aged, 80 and over[MESH]
  • |COVID-19 Nucleic Acid Testing/methods[MESH]
  • |COVID-19 Serological Testing/*methods[MESH]
  • |Enzyme-Linked Immunosorbent Assay/methods[MESH]
  • |Female[MESH]
  • |Humans[MESH]
  • |Immunoglobulin A/*blood[MESH]
  • |Immunoglobulin G/*blood[MESH]
  • |Male[MESH]
  • |Middle Aged[MESH]
  • |Point-of-Care Testing[MESH]
  • |Sensitivity and Specificity[MESH]


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