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Selective association of multiple sclerosis with infectious mononucleosis

B M Zaadstra1, A M J Chorus, S van Buuren

  • 1Department of Prevention and Care, TNO Quality of Life, Leiden, The Netherlands, Netherlands Interdisciplinary Demographic Institute, The Hague, The Netherlands.

Multiple Sclerosis (Houndmills, Basingstoke, England)
|January 23, 2008
PubMed

Insights

Infectious mononucleosis (IM) significantly increases the risk of developing multiple sclerosis (MS). This large Dutch study found IM

Area of Science:

  • Neurology
  • Epidemiology
  • Infectious Diseases

Background:

  • Conflicting evidence exists regarding the association between multiple sclerosis (MS) and infectious mononucleosis (IM).
  • Previous studies have not definitively established the strength or specificity of this link.

Purpose of the Study:

  • To evaluate the association between MS and various childhood infections, with a focus on infectious mononucleosis (IM).
  • To determine if IM is a stronger risk factor for MS compared to other common childhood infections.

Main Methods:

  • A large population-based case-control study was conducted in the Netherlands.
  • Data from 2,877 MS cases and 2,673 controls were analyzed.
  • Participants completed self-administered questionnaires on infection history before age 25.

Main Results:

  • Odds ratios for common infections like measles and chickenpox were not significantly elevated in MS cases.
  • A significantly higher Odds Ratio (2.22) was observed for clinically manifest IM in MS cases compared to controls.
  • The age of IM onset did not differ between MS cases and controls.

Conclusions:

  • Prior infectious mononucleosis (IM) is a significant risk factor for developing multiple sclerosis (MS).
  • The association between IM and MS is considerably stronger than that observed for other common childhood infections.

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