Editor’s Comment: In this study, a subset of CFS patients was found to have an immune deficiency that allows Epstein-Barr virus (EBV) to replicate, even beyond the acute stage of the original infection. B-cells are the part of the immune system that “remembers” pathogens (viruses, bacteria, etc.) in order to mount attacks against future infections. The patients in this study showed an impaired B- and T-cell response to EBV, leading to latent virus reactivation. (EBV, like all herpesviruses, remains in the body forever.) The early theory that CFS was a form of “chronic mono” now appears to have substantiation.
By Madlen Loebel et al. (Thanks to Prohealth)