A severe case of COVID-19 can "reawaken" dormant viruses in the body, even in people with otherwise healthy immune systems, a new study finds.
These reactivated viruses include Epstein-Barr virus (the "mono" virus, or EBV), cytomegalovirus (CMV), herpes simplex virus (HSV) and anelloviruses. That final group of viruses can be found in the vast majority of people, but they have never been definitively shown to cause human disease.
