To quantify SARS‐CoV‐2 reactive CD4 T cells in individuals who recovered from COVID‐19 at least 9 months post recovery, PBMCs were cultured with peptide pools from the Nucleocapsid (N) or Spike (S1) (S2) regions of SARS‐CoV‐2 and CD4 T cells were analysed via flow cytometry for upregulation of Th1‐related cytokines IFNγ, IL‐2 and TNFα as well as expression of CD154 (representative gating shown in Figure S1). This evidence concerns the gene CD4 and COVID-19.