Author: Ryan, F. J.; Hope, C. M.; Masavuli, M. G.; Lynn, M. A.; Mekonnen, Z. A.; Yeow, A. E. L.; Valtanen, P. G.; Al-Delfi, Z.; Gummow, J. A.; Ferguson, C.; O'Connor, S.; Reddi, B.; Shaw, D.; Kok-Lim, C.; Gleadle, J. M.; Beard, M. R.; Barry, S. C.; Grubor-Bauk, B.; Lynn, D. J.
Title: Long-term perturbation of the peripheral immune system months after SARS-CoV-2 infection Cord-id: 36pwdjhp Document date: 2021_8_3
ID: 36pwdjhp
Snippet: Increasing evidence suggests immune dysregulation in individuals recovering from SARS-CoV-2 infection. We have undertaken an integrated analysis of immune responses at a transcriptional, cellular, and serological level at 12, 16, and 24 weeks post-infection (wpi) in 69 individuals recovering from mild, moderate, severe, or critical COVID-19. Anti-Spike and anti-RBD IgG responses were largely stable up to 24wpi and correlated with disease severity. Deep immunophenotyping revealed significant diff
Document: Increasing evidence suggests immune dysregulation in individuals recovering from SARS-CoV-2 infection. We have undertaken an integrated analysis of immune responses at a transcriptional, cellular, and serological level at 12, 16, and 24 weeks post-infection (wpi) in 69 individuals recovering from mild, moderate, severe, or critical COVID-19. Anti-Spike and anti-RBD IgG responses were largely stable up to 24wpi and correlated with disease severity. Deep immunophenotyping revealed significant differences in multiple innate (NK cells, LD neutrophils, CXCR3+ monocytes) and adaptive immune populations (T helper, T follicular helper and regulatory T cells) in COVID-19 convalescents compared to healthy controls, which were most strongly evident at 12 and 16wpi. RNA sequencing suggested ongoing immune and metabolic dysregulation in convalescents months after infection. Variation in the rate of recovery from infection at a cellular and transcriptional level may explain the persistence of symptoms associated with long COVID in some individuals.
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