COVID-19 Leaves Its Mark on the Brain.

[DontTreadOnMe]

Another candidate that may cause CFS , Borrelia burgdoferi bacteria aka Lyme .

Lyme can cause a lot different problems .

Lyme....another manufactured illness.  
https://www.bayarealyme.org/about-lyme/h...e-disease/
https://www.defenseone.com/threats/2019/...ut/158529/
[although MSM wants to deny the origin]

ETA
My friend would tell you Lyme definitely caused her CFS.