Kerr, Jonathan R, Tyrrell, David A J · Current pain and headache reports · 2003 · DOI
This study examined how parvovirus B19 (a common virus) can trigger ME/CFS in some people. The researchers found that patients who developed ME/CFS after B19 infection had abnormal levels of immune signaling chemicals in their blood (specifically TNF-alpha, interferon-gamma, and MCP-1). Importantly, some patients improved when treated with intravenous immunoglobulin therapy, suggesting B19-triggered ME/CFS may be treatable.
This work suggests ME/CFS may arise from identifiable viral triggers with measurable immune dysregulation, potentially enabling diagnostic biomarkers and targeted treatments. The finding that some ME/CFS cases may respond to specific immunotherapy (IVIG) offers hope for intervention and provides a tractable model for understanding broader ME/CFS pathophysiology.
This study does not prove that parvovirus B19 causes most or all ME/CFS cases—it addresses only B19-triggered cases. The cytokine abnormalities are correlative, not proven to be causal in producing fatigue or symptom persistence. The study also does not establish why some B19-infected individuals develop chronic disease while others recover completely.
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
Kerr, Jonathan R & Tyrrell, David A J (2003). Cytokines in parvovirus B19 infection as an aid to understanding chronic fatigue syndrome.. Current pain and headache reports. https://doi.org/10.1007/s11916-003-0031-3
BibTeX
@article{mecfsatlas-kerr-2003-cytokines-parvovirus,
author = {Kerr, Jonathan R and Tyrrell, David A J},
title = {Cytokines in parvovirus B19 infection as an aid to understanding chronic fatigue syndrome.},
journal = {Current pain and headache reports},
year = {2003},
doi = {10.1007/s11916-003-0031-3},
note = {PubMed: 12946285},
url = {https://www.mecfsatlas.com/evidence/kerr-2003-cytokines-parvovirus},
}Atlas snapshot reference
ME/CFS Atlas. Generator v1 / Scanner v1.4 / policy v0.1. Accessed 2026-05-30. https://www.mecfsatlas.com/evidence/kerr-2003-cytokines-parvovirus
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