Ablashi, D V, Salahuddin, S Z, Josephs, S F et al. · In vivo (Athens, Greece) · 1991
This review examines Human Herpesvirus-6 (HHV-6), a common virus that most people carry. The virus can reactivate in people with certain illnesses, including ME/CFS. The study found that people with ME/CFS sometimes have higher levels of antibodies to HHV-6, suggesting the virus may be active in their bodies.
This review provides important background on a virus that some ME/CFS researchers have investigated as a potential contributor to disease. Understanding HHV-6 reactivation patterns in ME/CFS could help explain immune dysfunction and inform future treatment strategies. The observation that ME/CFS patients show elevated HHV-6 antibodies suggests viral reactivation warrants further investigation as a disease mechanism.
This review does not establish that HHV-6 causes ME/CFS, only that reactivation occurs in some ME/CFS patients. It does not demonstrate the mechanism by which HHV-6 reactivation contributes to symptom severity or whether treating HHV-6 improves outcomes. The study is observational and cannot prove causation or determine whether HHV-6 reactivation is a primary driver or secondary consequence of ME/CFS pathology.
About the PEM badge: “PEM required” means post-exertional malaise was an explicit required diagnostic criterion for participant inclusion in this study — not that PEM was studied, observed, or discussed. Studies using criteria that do not require PEM (e.g. Fukuda, Oxford) are tagged “PEM not required”. How the atlas works →
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