E3 PreliminaryPreliminaryPEM unclearCase-ControlPeer-reviewedMachine draft
Chronic fatigue syndrome and fibromyalgia following immunization with the hepatitis B vaccine: another angle of the 'autoimmune (auto-inflammatory) syndrome induced by adjuvants' (ASIA).
Agmon-Levin, Nancy, Zafrir, Yaron, Kivity, Shaye et al. · Immunologic research · 2014 · DOI
Quick Summary
This study looked at 19 people who developed chronic fatigue syndrome (CFS) or fibromyalgia (FM) after receiving the hepatitis B vaccine. Researchers found that most patients experienced multiple symptoms including fatigue, muscle/joint pain, and neurological problems within weeks to months of vaccination. The study suggests that in some cases, these conditions may be triggered by the vaccine's components, particularly in people with genetic predisposition to autoimmune diseases.
Why It Matters
This study explores a potential environmental trigger (vaccination) for ME/CFS and FM, contributing to understanding of post-infectious or post-exposure mechanisms in these conditions. Identifying risk factors and temporal relationships may help clinicians recognize and manage vaccine-associated onset of these debilitating illnesses.
Observed Findings
- Mean time from last vaccine dose to symptom onset was 38.6±79.4 days (range: days to 1 year)
- 84.2% of patients reported neurological manifestations; 78.9% reported musculoskeletal symptoms
- 71% of tested patients had detectable autoantibodies
- 68.4% of patients were female; mean age was 28.6±11 years
- All 19 patients met ASIA diagnostic criteria
Inferred Conclusions
- CFS and FM can be temporally related to hepatitis B vaccination as part of ASIA syndrome in susceptible individuals
- Adverse events during immunization, personal/familial autoimmune history, and elevated autoantibody titers may serve as risk factors
- ASIA criteria appear applicable to understanding vaccine-associated onset of CFS and FM
Remaining Questions
- What proportion of hepatitis B vaccine recipients develop CFS/FM, and what distinguishes susceptible from non-susceptible individuals?
- Which specific vaccine components or adjuvants trigger symptom onset in genetically predisposed people?
- How do symptom trajectories and long-term outcomes differ between vaccine-triggered and spontaneous-onset CFS/FM?
What This Study Does Not Prove
This study does not establish a causal relationship between hepatitis B vaccination and CFS/FM—it documents temporal association in a selected group of 19 patients. The lack of a control group means it cannot determine whether similar symptoms occur in vaccinated individuals without CFS/FM. It cannot identify what specific vaccine components or individual factors determine who develops these conditions after vaccination.
Tags
Symptom:Cognitive DysfunctionPainFatigueSensory Sensitivity
Biomarker:Autoantibodies
Phenotype:Infection-TriggeredGradual Onset
Method Flag:PEM Not DefinedWeak Case DefinitionNo ControlsSmall SampleMixed Cohort
Metadata
- DOI
- 10.1007/s12026-014-8604-2
- PMID
- 25427994
- Review status
- Machine draft
- Evidence level
- Early hypothesis, preprint, editorial, or weak support
- Last updated
- 8 April 2026
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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