The immunological mechanisms that control pneumococcal carriage
Jochems, Simon P.
Weiser, Jeffrey N.
Ferreira, Daniela M.
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CitationJochems, Simon P., Jeffrey N. Weiser, Richard Malley, and Daniela M. Ferreira. 2017. “The immunological mechanisms that control pneumococcal carriage.” PLoS Pathogens 13 (12): e1006665. doi:10.1371/journal.ppat.1006665. http://dx.doi.org/10.1371/journal.ppat.1006665.
AbstractColonization of the human nasopharynx by pneumococcus is extremely common and is both the primary reservoir for transmission and a prerequisite for disease. Current vaccines targeting the polysaccharide capsule effectively prevent colonization, conferring herd protection within vaccinated communities. However, these vaccines cover only a subset of all circulating pneumococcal strains, and serotype replacement has been observed. Given the success of pneumococcal conjugate vaccine (PCV) in preventing colonization in unvaccinated adults within vaccinated communities, reducing nasopharyngeal colonization has become an outcome of interest for novel vaccines. Here, we discuss the immunological mechanisms that control nasopharyngeal colonization, with an emphasis on findings from human studies. Increased understanding of these immunological mechanisms is required to identify correlates of protection against colonization that will facilitate the early testing and design of novel vaccines.
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