Performance evaluation of three automated quantitative immunoassays and their correlation with a surrogate virus neutralization test in coronavirus disease 19 patients and pre-pandemic controls.

SARS-CoV-2 pandemic is currently ongoing, meanwhile vaccinations are rapidly underway in some countries. The quantitative immunoassays detecting antibodies against spike antigen of SARS-CoV-2 have been developed based on the findings that they have a better correlation with the neutralizing antibody. The performances of the Abbott Architect SARS-CoV-2 IgG II Quant, DiaSorin LIAISON SARS-CoV-2 TrimericS IgG, and Roche Elecsys anti-SARS-CoV-2 S were evaluated on 173 sera from 126 SARS-CoV-2 patients and 151 pre-pandemic sera. Their correlations with GenScript cPass SARS-CoV-2 Neutralization Antibody Detection Kit were also analyzed on 173 sera from 126 SARS-CoV-2 patients. Architect SARS-CoV-2 IgG II Quant and Elecsys anti-SARS-CoV-2 S showed the highest overall sensitivity (96.0%), followed by LIAISON SARS-CoV-2 TrimericS IgG (93.6%). The specificities of Elecsys anti-SARS-CoV-2 S and LIAISON SARS-CoV-2 TrimericS IgG were 100.0%, followed by Architect SARS-CoV-2 IgG II Quant (99.3%). Regarding the correlation with cPass neutralization antibody assay, LIAISON SARS-CoV-2 TrimericS IgG showed the best correlation (Spearman rho = 0.88), followed by Architect SARS-CoV-2 IgG II Quant and Elecsys anti-SARS-CoV-2 S (all rho = 0.87). The three automated quantitative immunoassays showed good diagnostic performance and strong correlations with neutralization antibodies. These assays will be useful in diagnostic assistance, evaluating the response to vaccination, and the assessment of herd immunity in the future.

Jung K ，Shin S ，Nam M ，Hong YJ ，Roh EY ，Park KU ，Song EY ... -  《-》

Serological Assays for Assessing Postvaccination SARS-CoV-2 Antibody Response.

Mahmoud SA ，Ganesan S ，Naik S ，Bissar S ，Zamel IA ，Warren KN ，Zaher WA ，Khan G ... -  《Microbiology Spectrum》

Evaluation of Three Quantitative Anti-SARS-CoV-2 Antibody Immunoassays.

Chapuy-Regaud S ，Miédougé M ，Abravanel F ，Da Silva I ，Porcheron M ，Fillaux J ，Diméglio C ，Izopet J ... -  《Microbiology Spectrum》

Inference of SARS-CoV-2 spike-binding neutralizing antibody titers in sera from hospitalized COVID-19 patients by using commercial enzyme and chemiluminescent immunoassays.

Valdivia A ，Torres I ，Latorre V ，Francés-Gómez C ，Albert E ，Gozalbo-Rovira R ，Alcaraz MJ ，Buesa J ，Rodríguez-Díaz J ，Geller R ，Navarro D ... -  《-》

Evaluation of Humoral Immune Response after SARS-CoV-2 Vaccination Using Two Binding Antibody Assays and a Neutralizing Antibody Assay.

Nam M ，Seo JD ，Moon HW ，Kim H ，Hur M ，Yun YM ... -  《Microbiology Spectrum》