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10.1007/s10096-021-04203-8

http://scihub22266oqcxt.onion/10.1007/s10096-021-04203-8
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33660134!7928199!33660134
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suck abstract from ncbi


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pmid33660134      Eur+J+Clin+Microbiol+Infect+Dis 2021 ; 40 (6): 1309-1317
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  • Automated Western immunoblotting detection of anti-SARS-CoV-2 serum antibodies #MMPMID33660134
  • Edouard S; Jaafar R; Orain N; Parola P; Colson P; La Scola B; Fournier PE; Raoult D; Drancourt M
  • Eur J Clin Microbiol Infect Dis 2021[Jun]; 40 (6): 1309-1317 PMID33660134show ga
  • ELISA and chemiluminescence serological assays for COVID-19 are currently incorporating only one or two SARS-CoV-2 antigens. We developed an automated Western immunoblotting as a complementary serologic assay for COVID-19. The Jess(TM) Simple Western system, an automated capillary-based assay, was used, incorporating an inactivated SARS-CoV-2 lineage 20a strain as the source of antigen, and total immunoglobulins (IgG, IgM, IgA) detection. In total, 602 sera were tested including 223 from RT-PCR-confirmed COVID-19 patients, 76 from patients diagnosed with seasonal HCoVs and 303 from coronavirus-negative control sera. We also compared this assay with the EUROIMMUN(R) SARS-CoV-2 IgG ELISA kit. Among 223 sera obtained from RT-PCR-confirmed COVID-19 patients, 180/223 (81%) exhibited reactivity against the nucleocapsid and 70/223 (31%) against the spike protein. Nucleocapsid reactivity was further detected in 9/76 (14%) samples collected from patients diagnosed with seasonal HCoVs and in 15/303 (5%) coronavirus-negative control samples. In the subset of sera collected more than 2 weeks after the onset of symptoms, the sensitivity was 94% and the specificity 93%, the latter value probably reflecting cross-reactivity of SARS-CoV-2 with other coronaviruses. The automated Western immunoblotting presented a substantial agreement (90%) with the compared ELISA (Cohen's Kappa=0.64). Automated Western immunoblotting may be used as a second line test to monitor exposure of people to HCoVs including SARS-CoV-2.
  • |*Blotting, Western[MESH]
  • |Antibodies, Viral/blood/*isolation & purification[MESH]
  • |Automation, Laboratory[MESH]
  • |COVID-19/*diagnosis[MESH]
  • |Coronavirus Nucleocapsid Proteins/immunology[MESH]
  • |Cross Reactions[MESH]
  • |Enzyme-Linked Immunosorbent Assay[MESH]
  • |Humans[MESH]
  • |Phosphoproteins/immunology[MESH]
  • |SARS-CoV-2/immunology[MESH]
  • |Sensitivity and Specificity[MESH]


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