Outbreak of Invasive Streptococcus pneumoniae Serotype 12F Among a Marginalized Inner-City Population in Winnipeg, Canada, 2009-2011

Abstract

An immunization campaign targeting high-risk groups was undertaken with pneumococcal polysaccharide vaccine, and subsequently rates of serotype 12F decreased. To our knowledge, this is the largest documented community outbreak of serotype 12F IPD and the first report of an outbreak of IPD serotype 12F in a marginalized urban population in Canada.