这个词是什么意思？
A species of gram-negative bacteria in which man is the primary host and the human body louse, Pediculus humanus, the principal vector. It is the etiological agent of TRENCH FEVER.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D018413 · MeSH 2026。
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