The immunological mechanisms that control pneumococcal carriage.

The immunological mechanisms that control pneumococcal carriage.
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DOI:
10.1371/journal.ppat.1006665
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发表时间:
2017-12
期刊:
影响因子:
6.7
通讯作者:
Ferreira DM
Ferreira DM
中科院分区:
医学1区
文献类型:
--
作者:
Jochems SP;Weiser JN;Malley R;Ferreira DM

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肺炎球菌在人鼻咽部的定植极为常见,既是传播的主要宿主,也是疾病的先决条件。目前针对多糖胶囊的疫苗有效地防止了定植,在接种疫苗的社区内提供了群体保护。然而,这些疫苗只覆盖了所有流行的肺炎球菌菌株的一个子集,并且已经观察到血清型替换。鉴于肺炎球菌结合疫苗(PCV)在预防接种社区内未接种疫苗的成年人定植方面的成功,减少鼻咽定植已成为新型疫苗的一个重要结果。在这里,我们讨论了控制鼻咽定植的免疫机制,重点是人类研究的结果。需要增加对这些免疫机制的理解,以确定保护免受定植的相关性,这将有助于早期测试和设计新疫苗。
Colonization 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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