Comment by hvocode

Chronic fatigue syndrome has long been known to often start with a viral infection (for example: https://pubmed.ncbi.nlm.nih.gov/21756995/). Other issues can arise as a consequence of viral infections as well (e.g., thyroid problems). I don’t think this is well known amongst the general public, even if it is known in the medical field. This may be a reason why people are surprised about “long-covid” as if long term effects are something unique to the SARS-COV-2 virus.