Yeah. Atleast 50% report an onset right after a viral infection. And it’s not impossible to assume the other 50% were caused by viral infections too but the patient didn’t make the connection. Obviously we don’t really know yet.

[–] jonne@infosec.pub 2 points 4 weeks ago

Yeah, would be hard to prove unless people started routinely testing themselves for a broad array of viruses every time they fall ill.

But hopefully with the influx of long COVID patients more research will be done, and people with CFS, fibromyalgia and similar diseases will at least be believed, because all of those are typically dismissed because you can't really see it.