Kerr, J R, Curran, M D, Moore, J E et al. · Scandinavian journal of infectious diseases · 1995 · DOI
Researchers followed 53 people who had acute parvovirus B19 infection (a virus that causes rash and joint pain) for several years. They found that 7 people, all women, still had the virus detectable in their blood years later. Of these 7, one person developed chronic fatigue syndrome along with persistent joint pain, suggesting that B19 infection might sometimes persist in the body and potentially trigger long-term symptoms.
This study provides early evidence that parvovirus B19 can persist in the body long after acute infection and may be associated with chronic symptoms including fatigue and joint pain—conditions core to ME/CFS. Understanding viral persistence mechanisms could inform investigation of infectious triggers in ME/CFS etiology and guide future therapeutic approaches targeting persistent viral reservoirs.
This study does not prove that B19 causes ME/CFS; it is a small descriptive study with only one patient meeting both criteria (persistent infection and chronic fatigue syndrome). The study does not establish causation, does not include a representative ME/CFS cohort, and does not characterize whether viral persistence directly drives symptom development or is merely coincidental.
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, J R, Curran, M D, Moore, J E, & Murphy, P G (1995). Parvovirus B19 infection--persistence and genetic variation.. Scandinavian journal of infectious diseases. https://doi.org/10.3109/00365549509047066
BibTeX
@article{mecfsatlas-kerr-1995-parvovirus-b19,
author = {Kerr, J R and Curran, M D and Moore, J E and Murphy, P G},
title = {Parvovirus B19 infection--persistence and genetic variation.},
journal = {Scandinavian journal of infectious diseases},
year = {1995},
doi = {10.3109/00365549509047066},
note = {PubMed: 8685632},
url = {https://www.mecfsatlas.com/evidence/kerr-1995-parvovirus-b19},
}Atlas snapshot reference
ME/CFS Atlas. Generator v1 / Scanner v1.4 / policy v0.1. Accessed 2026-05-29. https://www.mecfsatlas.com/evidence/kerr-1995-parvovirus-b19
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