Miller, Ruth R, Gardy, Jennifer L, Tang, Patrick et al. · Fatigue : biomedicine, health & behavior · 2013 · DOI
This study used advanced genetic sequencing techniques to search for microorganisms (bacteria, viruses, and fungi) that might cause ME/CFS. Rather than looking for one specific virus, the researchers cast a wider net to detect any microbes present in patient samples. This approach moved beyond previous unsuccessful searches for a single virus, offering a more comprehensive way to understand whether infections play a role in ME/CFS.
This research is important because it shifted the investigative approach from searching for a single pathogen (XMRV) to a broader microbiome exploration, which may better reflect the complex microbial landscape in ME/CFS. Understanding whether multiple microorganisms or dysbiosis contribute to disease could open new diagnostic and treatment pathways for patients.
This study does not establish that any specific microorganism causes ME/CFS, nor does it prove that microbial infection is the primary disease mechanism. Finding microbes in patients does not establish causation, as microbes may be present secondarily due to immune dysfunction or other factors. The study also does not provide clinical outcomes or therapeutic recommendations.
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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