IL6 and influenza: Interleukin‐6 (IL‐6) is upregulated during both influenza and Covid‐19 infection and has been linked to disease severity (Hafez et al., 2023; Hagau et al., 2010; Huang et al., 2020; Kaiser et al., 2001; La Gruta et al., 2007; Liu et al., 2020; Zhang et al., 2020).