NOV 13, 2020 10:00 AM PST

Immune profiling of hospitalized COVID-19 patients

Speaker

Abstract
Date:  November 13, 2020
Time: 10:00am PDT, 1:00pm EDT
 
Coronavirus disease 2019 (COVID-19) is currently a global pandemic, but human immune responses to the virus remain poorly understood. We used high-dimensional cytometry to analyze 125 COVID-19 patients and compare them with recovered and healthy individuals. Integrated analysis of ~200 immune and ~50 clinical features revealed activation of T cell and B cell subsets in a proportion of patients. A subgroup of patients had T cell activation characteristic of acute viral infection and plasmablast responses reaching >30% of circulating B cells. However, another subgroup had lymphocyte activation comparable with that in uninfected individuals. Stable versus dynamic immunological signatures were identified and linked to trajectories of disease severity change. Our analyses identified three immunotypes associated with poor clinical trajectories versus improving health. These immunotypes may have implications for the design of therapeutics and vaccines for COVID-19.
 
Learning Objectives:
  • Strategies for immune profiling in human disease
  • Strategies for data analysis and integration with flow cytometry and clinical data
  • Identification of major T and B cell immune phenotypes in hospitalized COVID-19 patients
 
 
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