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10.1371/journal.pone.0247797

http://scihub22266oqcxt.onion/10.1371/journal.pone.0247797
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33661960!7932143!33661960
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suck abstract from ncbi


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pmid33661960      PLoS+One 2021 ; 16 (3): e0247797
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  • Longitudinal SARS-CoV-2 antibody study using the Easy Check COVID-19 IgM/IgG lateral flow assay #MMPMID33661960
  • Higgins RL; Rawlings SA; Case J; Lee FY; Chan CW; Barrick B; Burger ZC; Yeo KJ; Marrinucci D
  • PLoS One 2021[]; 16 (3): e0247797 PMID33661960show ga
  • Since the initial identification of the novel coronavirus SARS-CoV-2 in December of 2019, researchers have raced to understand its pathogenesis and begun devising vaccine and treatment strategies. An accurate understanding of the body's temporal immune response against SARS-CoV-2 is paramount to successful vaccine development and disease progression monitoring. To provide insight into the antibody response against SARS-CoV-2, plasma samples from 181 PCR-confirmed COVID-19 patients collected at various timepoints post-symptom onset (PSO) were tested for the presence of anti-SARS-CoV-2 IgM and IgG antibodies via lateral flow. Additionally, 21 donors were tracked over time to elucidate patient-specific immune responses. We found sustained levels of anti-SARS-CoV-2 antibodies past 130 days PSO, with 99% positivity observed at 31-60 days PSO. By 61-90 days PSO, the percentage of IgM-/IgG+ results were nearly equal to that of IgM+/IgG+ results, demonstrating a shift in the immune response with a decrease in IgM antibody levels. Results from this study not only provide evidence that the antibody response to COVID-19 can persist for over 4 months, but also demonstrates the ability of Easy Check to monitor seroconversion and antibody response of patients. Easy Check was sufficiently sensitive to detect antibodies in patient samples as early as 1-4 days PSO with 86% positivity observed at 5-7 days PSO. Further studies are required to determine the longevity and efficacy of anti-SARS-CoV-2 antibodies, and whether they are protective against re-infection.
  • |Adolescent[MESH]
  • |Adult[MESH]
  • |Aged[MESH]
  • |Aged, 80 and over[MESH]
  • |Antibodies, Viral/*blood/immunology[MESH]
  • |COVID-19 Serological Testing/instrumentation/methods[MESH]
  • |COVID-19/*blood/immunology[MESH]
  • |Equipment Design[MESH]
  • |Female[MESH]
  • |Humans[MESH]
  • |Immunoglobulin G/*blood/immunology[MESH]
  • |Immunoglobulin M/*blood/immunology[MESH]
  • |Longitudinal Studies[MESH]
  • |Male[MESH]
  • |Middle Aged[MESH]
  • |SARS-CoV-2/*immunology/isolation & purification[MESH]


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