Fig. 3
From: Accelerated immune ageing is associated with COVID-19 disease severity
CD8 T cell senescence and exhaustion post-COVID-19 Comparison of systemic percentage of (A) CD28−ve CD57+ve senescent CD8 T cells in healthy age and sex-matched controls (n = 59) and mild (n = 15), moderate (n = 29) and severe (n = 55) COVID-19 survivors 3–5 months post-infection. B Frequency of KLRG1+ve senescent CD8 T cells in healthy age and sex-matched controls (n = 51) and mild (n = 15), moderate (n = 24) and severe (n = 46) COVID-19 survivors 3–5 months post-infection. C percentage and (D) absolute numbers of PD1+ve exhausted CD8 T cells in healthy age and sex-matched controls (n = 33) and severe (n = 38) COVID-19 survivors 3–5 months post-infection. Statistical analysis by two-sided Mann–Whitney non-parametric test. If not indicated p-valueue is not significant