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10.1016/j.jviromet.2021.114173

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suck abstract from ncbi


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pmid33930473      J+Virol+Methods 2021 ; 293 (ä): 114173
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  • Diagnostic accuracy of three SARS-CoV2 antibody detection assays, neutralizing effect and longevity of serum antibodies #MMPMID33930473
  • Bubonja-Sonje M; Baticic L; Abram M; Cekinovic Grbesa D
  • J Virol Methods 2021[Jul]; 293 (ä): 114173 PMID33930473show ga
  • Evidence is currently insufficient to know whether SARS-CoV-2 antibodies (Abs) protect from future infection and how long immunity will last. The kinetics of the immune response to SARS-CoV-2 infection and role of serology in estimating individual protective immunity is yet to be established. We evaluated diagnostic performances of three serological assays - Abbott Architect CMIA IgG, bioMerieux VIDAS ELFA IgG/IgM, and Diesse Chorus ELISA IgG/IgM, and analyzed longevity and potential neutralizing effect of SARS-CoV-2 Abs in COVID-19 patients. Clinical sensitivities of assessed IgG tests two to three weeks post symptom onset (PSO) were very high: 96.77 % for Architect, 96.77 % for Chorus, and 100.00 % for VIDAS. Sensitivities of two assessed IgM assays were moderate: 74.07 % for Chorus, and 76.92 % for VIDAS. Specificities were excellent for all assessed IgG assays: 99.01 % for Architect and 100 % for Chorus and VIDAS. Chorus and VIDAS IgM assays also achieved excellent specificity of 99.01 % and 100 %, respectively. In most cases IgG Abs were still present eight months PSO. Neutralizing antibodies were detected in majority of serum samples from convalescent patients. Serum samples from severe COVID-19 patients had higher antibody titers and higher neutralizing activity. We observed a strong positive correlation among SARS-CoV-2 IgG antibody titer and neutralizing activity. The strongest positive correlation to neutralizing activity was found for VIDAS IgG assay.
  • |Antibodies, Neutralizing/*blood[MESH]
  • |Antibodies, Viral/*blood[MESH]
  • |COVID-19 Serological Testing/*methods[MESH]
  • |COVID-19/*diagnosis[MESH]
  • |Humans[MESH]
  • |Immunoglobulin G/blood[MESH]
  • |Immunoglobulin M/blood[MESH]
  • |Neutralization Tests[MESH]
  • |SARS-CoV-2/*immunology[MESH]


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