Looking for references: Initial covid infection severity and development of ME/CFS

Is anyone aware of studies that have quantified the severity of initial COVID-19 infection and development of ME/CFS?

We know that (i) ME/CFS can develop after any severity of acute infection; (ii) patients often report development of ME/CFS after mild or moderate infection; but do we have data on this?

If not, data answering the same question but for long COVID of any form, will do.

Thanks.

 

I have found one study that reports non-hospitalization is associated with increased risk of developing CFS.

https://www.sciencedirect.com/science/article/pii/S1876034124002934

 

Seems to suggest severity of neurological Long COVID symptoms is not associated with severity of acute infection.

See study thread