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Infectious mononucleosis and risk for multiple sclerosis: a meta-analysis
Evan L Thacker1, Fariba Mirzaei, Alberto Ascherio
1Department of Nutrition, Harvard School of Public Health, Boston, MA 02115, USA. ethacker@hsph.harvard.edu
Annals of Neurology
|February 28, 2006
Summary
Infectious mononucleosis (IM), caused by Epstein-Barr virus, significantly increases the risk of developing multiple sclerosis (MS). This finding highlights a crucial link between viral infections and autoimmune diseases like MS.
Area of Science:
- Neurology
- Epidemiology
- Infectious Diseases
Background:
- Infectious mononucleosis (IM) is a common manifestation of Epstein-Barr virus (EBV) infection.
- Multiple sclerosis (MS) is a chronic neurological disease with complex etiology.
- The potential link between IM and MS risk has been investigated.
Purpose of the Study:
- To systematically review and meta-analyze studies examining the association between IM and MS risk.
- To quantify the risk of MS following an IM diagnosis.
Main Methods:
- Systematic review and meta-analysis of case-control and cohort studies.
- Inclusion of 14 relevant studies.
Main Results:
- A combined relative risk of 2.3 for MS after IM was identified (95% CI, 1.7-3.0).
- Statistical significance was high (p < 10(-8)).
- Heterogeneity from study design, MS definition, and latitude had minimal impact on results.
Conclusions:
- Epstein-Barr virus infection, presenting as IM in adolescents and young adults, is a confirmed risk factor for MS.
- This association underscores the importance of EBV in MS pathogenesis.
- Further research into preventative strategies and mechanisms is warranted.
