2/ These are diverse diseases & increasing age technically not a disease at all. However, there is at least 1 factor in common among all of the co-morbidities identified thus far:
INFLAMMATION
3/
A survey of the co-morbidities revealed another commonality; a close association w/ dysregulation of the pro-inflammatory, neutrophil-recruiting cytokine, IL-17A.
IL-17A is made by multiple immune cell types, including lung-resident innate lymphoid cells (ILC3s).
3b/
Another commonality in COVID-19 co-morbidities: elevated TGF-β