“Researchers found herpes viruses … circulating in unvaccinated patients who had experienced COVID. In patients with chronic fatigue syndrome, antibody responses were stronger, signaling an immune system struggling to fight off the lingering viruses,” Fortune reported.
“Such non-COVID pathogens have been named as likely culprits behind chronic fatigue syndrome, also known as myalgic encephalomyelitis.”
COVID-19 Could Reactivate Chronic Fatigue Symptoms, Study Says
https://www.webmd.com/a-to-z-guides/news/20221227/covid-19-could-reactivate-chronic-fatigue-symptoms-study-says