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Multiple Sclerosis 2008;14:292. A more recent version of this article appeared on April 1, 2008
Chlamydia pneumoniae-specific serum immune complexes in patients with multiple sclerosis
1 Department of Neurology, University of Sydney, Blackburn Building, Camperdown, Sydney, NSW 2006, Australia
* To whom correspondence should be addressed.
The significance of Chlamydia pneumoniae infection in patients with multiple sclerosis (MS) is unclear.We determined the frequency of serum C. pneumoniae-specific immune complexes in patients withMS, neurological (OND) and healthy controls in a blinded, cross-sectional study. C. pneumoniaeimmune complexes were detected in 24% (38/156) of MS patients, 16% (11/69) of OND and 15%(77/499) of healthy controls. The odds ratio for all MS patients was 3.95 (95% CI: 2.15 to 7.24;P _ 0.0001) accounting for the covariates: sex, age, socio-economic status and area of residence. Theodds ratio for recently diagnosed MS patients was 4.33 (95% CI: 1.76 to 10.64; P _ 0.001). SystemicC. pneumoniae infection is more frequent in MS patients than the healthy population and occurs earlyin the course of the disease Key Words: Chlamydia pneumoniae; immune complexes; multiple sclerosis)
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