CD40LG and COVID-19: Correlational analyses only 3 months post recovery from COVID‐19 showed only weak correlations upon S1‐peptide challenge in IFNγ+ IL‐2+ CD4 T cells (Figure 2b, <3‐month recovery, p = 0.0011, r = 0.26) and in IFNγ+ IL‐2+ TNFα+ CD154+ CD4 T cells (Figure 2b, <3‐month recovery, p = 0.0009, r = 0.27).