it is hard to emphasize enough how little is known about the immune system in general, and long COVID (or ME/CFS) specifically. the more research i do the more shocking it gets, how much of the science barely explains anything, and is continuously finding new surprising interactions.

for example, did you know the brain and spine (CNS) have their own mostly-separate immune system? www.ncbi.nlm.nih.gov/pmc/articles...www.ncbi.nlm.nih.gov/pmc/articles...

Immune cells and CNS physiology: Microglia and beyond

In recent years, there has been great progress in the field of neuroimmunology, implicating both parenchymal macrophages (microglia) and meningeal immunity in homeostatic brain function. In this revie...