Ruiz-Pablos, Manuel, Paiva, Bruno, Montero-Mateo, Rosario et al. · Frontiers in immunology · 2021 · DOI
This review examines whether Epstein-Barr virus (EBV), a common virus that causes mononucleosis, might play a role in causing ME/CFS in some patients. The researchers found that certain people may have genetic traits that make them more vulnerable to EBV, and in these individuals, the virus might hide from the immune system in a way that leads to ME/CFS symptoms. They suggest that antiviral treatments targeting EBV could potentially help some ME/CFS patients.
Understanding whether EBV plays a causal role in ME/CFS could open pathways to targeted treatments for a subset of patients and help explain why some people develop this debilitating disease after viral infection. This work may guide future clinical trials testing antiviral therapies and inform genetic screening to identify vulnerable individuals.
This review does not prove that EBV causes ME/CFS in all or most patients—only that it may be relevant in a subset. The evidence reviewed is inconclusive about the direction of causality, and the proposal for EBV-specific HLA associations remains hypothetical and requires experimental validation. The study does not establish effective treatments.
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 →
The first block is for the primary paper and is the citation you should use in research work. The atlas-snapshot line only applies if you are specifically referring to this atlas’s reading of the paper on the date shown.
Primary citation
Ruiz-Pablos, Manuel, Paiva, Bruno, Montero-Mateo, Rosario, Garcia, Nicolas, & Zabaleta, Aintzane (2021). Epstein-Barr Virus and the Origin of Myalgic Encephalomyelitis or Chronic Fatigue Syndrome.. Frontiers in immunology. https://doi.org/10.3389/fimmu.2021.656797
BibTeX
@article{mecfsatlas-ruiz-pablos-2021-epstein-barr,
author = {Ruiz-Pablos, Manuel and Paiva, Bruno and Montero-Mateo, Rosario and Garcia, Nicolas and Zabaleta, Aintzane},
title = {Epstein-Barr Virus and the Origin of Myalgic Encephalomyelitis or Chronic Fatigue Syndrome.},
journal = {Frontiers in immunology},
year = {2021},
doi = {10.3389/fimmu.2021.656797},
note = {PubMed: 34867935},
url = {https://www.mecfsatlas.com/evidence/ruiz-pablos-2021-epstein-barr},
}Atlas snapshot reference
ME/CFS Atlas. Generator v1 / Scanner v1.4 / policy v0.1. Accessed 2026-05-30. https://www.mecfsatlas.com/evidence/ruiz-pablos-2021-epstein-barr
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