Effect of vaccines on bacterial meningitis worldwide

Peter B. McIntyre, Katherine L. O'Brien, Brian Greenwood, Diederik Van De Beek

Research output: Contribution to journalReview articlepeer-review

188 Scopus citations


Three bacteria-Haemophilus infl uenzae, Streptococcus pneumoniae, and Neisseria meningitidis-account for most acute bacterial meningitis. Measurement of the eff ect of protein-polysaccharide conjugate vaccines is most reliable for H infl uenzae meningitis because one serotype and one age group account for more than 90% of cases and the incidence has been best measured in high-income countries where these vaccines have been used longest. Pneumococcal and meningococcal meningitis are caused by diverse serotypes and have a wide age distribution; measurement of their incidence is complicated by epidemics and scarcity of surveillance, especially in low-income countries. Near elimination of H infl uenzae meningitis has been documented after vaccine introduction. Despite greater than 90% reductions in disease attributable to vaccine serotypes, all-age pneumococcal meningitis has decreased by around 25%, with little data from low-income settings. Near elimination of serogroup C meningococcal meningitis has been documented in several high-income countries, boding well for the eff ect of a new serogroup A meningococcal conjugate vaccine in the African meningitis belt.

Original languageEnglish (US)
Pages (from-to)1703-1711
Number of pages9
JournalThe Lancet
Issue number9854
StatePublished - Nov 2012

ASJC Scopus subject areas

  • General Medicine


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