Obesity

Antigen specific T cells in people with obesity at five months following ChAdOx1 COVID-19 vaccination

Int J Obes (Lond)Published Cross-sectional study

Authors' conclusion

These data indicate that PWO who have completed a primary course of ChAdOx1 COVID-19 vaccination have robust, durable, and functional antigen specific T cell immunity that is comparable to that seen in people without obesity.

Study context

Population
Subjects 5 months after a two-dose primary course of ChAdOx1 nCoV-19 (AZD1222) vaccination
Participants
50 subjects
Exposure
People with obesity vs matched controls
  • People with obesity (PWO)n = 30
  • Controlsn = 20reference
Outcome
SARS-CoV-2 spike-specific T cells (CD4+, CD8+; IFNγ, TNFα) by multicolour flow cytometry
Follow-up
5 months after vaccination
Methodological detailsmatched controls
  • Matched controls

Main finding

As reported in the abstract

  • Circulating SARS-CoV-2-specific T cells readily detected across the cohort, with robust responses to spike peptide stimulation in both T cell lines
  • PWO and controls had comparable levels of CD4+ and CD8+ spike-specific T cells
  • Polyfunctional T cells detected at similar frequencies in PWO and controls

Observational data: associations, not effects.

Original publication

Antigen specific T cells in people with obesity at five months following ChAdOx1 COVID-19 vaccination. Int J Obes (Lond). Published 8 November 2022. doi:10.1038/s41366-022-01235-8

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