Nature Communications (Jul 2021)

SARS-CoV-2 specific T cell responses are lower in children and increase with age and time after infection

  • Carolyn A. Cohen,
  • Athena P. Y. Li,
  • Asmaa Hachim,
  • David S. C. Hui,
  • Mike Y. W. Kwan,
  • Owen T. Y. Tsang,
  • Susan S. Chiu,
  • Wai Hung Chan,
  • Yat Sun Yau,
  • Niloufar Kavian,
  • Fionn N. L. Ma,
  • Eric H. Y. Lau,
  • Samuel M. S. Cheng,
  • Leo L. M. Poon,
  • Malik Peiris,
  • Sophie A. Valkenburg

DOI
https://doi.org/10.1038/s41467-021-24938-4
Journal volume & issue
Vol. 12, no. 1
pp. 1 – 14

Abstract

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Why children are generally less susceptible than adults to COVID-19 is unclear and has not extensively been examined longitudinally. Here the authors compare antibodies, cytokines and immune cell responses in adults and children over 6 months post-infection showing, among other things, a reduced CD4+ and CD8+ T cell response in children.