"These pathogens included herpesviruses such as cytomegalovirus and Epstein–Barr virus, which causes glandular fever (mononucleosis), as well as anelloviruses, which are typically harmless and don’t cause symptoms. More than 90% of the global adult population has been infected with at least one..."
COVID can wake up a slew of dormant viruses inside you
Reactivation of typically harmless anelloviruses, in particular, seems to be linked with developing long COVID, study finds.
nature.com