IL7 and COVID-19: IL-7 is known to be vital for T-cell homeostasis and autoimmune inflammatory condition (Lawson et al., 2015) and was reported to be upregulated in patients with COVID-19 with neurological conditions (Huang et al., 2020; Pacheco-Herrero et al., 2021), but its importance for neuroinflammation and glial activation needs to be confirmed still.