Epidemiology of Guillain-Barré syndrome in the province of Quebec

Geneviève Deceuninck, Renée-Myriam Boucher, Philippe De Wals, Manale Ouakki
Canadian Journal of Neurological Sciences. le Journal Canadien des Sciences Neurologiques 2008, 35 (4): 472-5

BACKGROUND: In the province of Quebec, a population-based study of Guillain-Barré syndrome (GBS) was conducted at the time of a mass immunization campaign against meningococcal disease, in 2001.

METHODS: The study population included residents aged 2 months to 20 years observed from November 1st, 2000 to December 31, 2002, representing 4,075,465 person-years of observation. GBS cases were identified in the provincial hospital database Med-Echo and medical records were reviewed.

RESULTS: Thirty-three incident GBS cases were identified, including 27 cases of acute inflammatory demyelinating polyradiculopathy. The overall GBS incidence rate was 0.8/100,000 person-years, higher in persons aged 1 to 4 years (2.1/100,000) than in those 5 years or more (0.6/100,000). There was a female preponderance and no significant seasonal variation. All patients survived.

CONCLUSION: Results could be used to interpret reports of adverse events associated with the introduction of new vaccines in this age-group in Canada.

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