[dontlaugh]

What is unusual is how long it lasts and, to some extent, how severe it can be.

[psychphysic]

Not really it's just got various names. chronic fatigue syndrome, postural orthostatic tachycardia syndrome, post viral fatigue...

Even straight up depression. When billions of people catch the same virus unintuitive things happen.

Maybe it's a strange virus (by what metric?) But it was definitely psychologically a very strange time.