The disease burden of invasive meningococcal serogroup B disease in Canada

Julie A Bettinger1, David W Scheifele, Nicole Le Saux

  • 1Vaccine Evaluation Center, BC Children's Hospital and University of British Columbia, Vancouver, British Columbia, Canada. jbettinger@cfri.ca

Abstract

Insights

Invasive meningococcal disease caused by serogroup B is a significant health concern in Canada, particularly in young children. Evaluating new serogroup B vaccines is crucial for potential prevention and control strategies.

Area of Science:

  • Public Health
  • Epidemiology
  • Vaccinology

Background:

  • Invasive meningococcal disease (IMD) is a rare but severe infection in Canada.
  • New vaccines targeting serogroup B offer potential for IMD prevention and control.
  • This study examines the disease burden of serogroup B IMD in Canada.

Purpose of the Study:

  • To analyze the incidence and characteristics of invasive meningococcal disease in Canada from 2002 to 2011.
  • To specifically assess the burden of serogroup B invasive meningococcal infections.
  • To inform potential vaccination strategies.

Main Methods:

  • Active, population-based surveillance was conducted in 12 Canadian metropolitan areas.
  • Data collected included laboratory-confirmed Neisseria meningitidis infections in adults and children.
  • Surveillance period spanned from 2002 to 2011.

Main Results:

  • A total of 769 IMD cases were recorded between 2002 and 2011.
  • Serogroup B was the most common cause of IMD, with the highest incidence across all age groups.
  • Peak incidence in infants under 1 year was observed in 2009; serogroup B incidence peaked in 2007.

Conclusions:

  • Serogroup B IMD significantly contributes to morbidity and mortality in Canada.
  • Serogroup B is the leading cause of IMD in the country.
  • Further evaluation of serogroup B vaccine effectiveness is needed to consider universal immunization programs.

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