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在调查流行性脑脊髓膜炎(简称流脑)发病流行因素时,除以往了解人群脑膜炎奈瑟氏菌(NM)带菌率、抗体水平、生活环境、气候条件等情况外,国内外还探索了某些微观因素。我们从流脑流行季节1990年元～4月份对该县部分人群进行了带菌状况与咽部正常菌丛对A群NM菌生长抑制作用的调查,本次调查了该县健康人群125人,从38人的咽部分离出对NMA群菌生长的抑制菌,抑制阳性率为30.40％。
In investigating the prevalence of epidemic cerebrospinal meningitis (referred to as meningitis) epidemic factors, in addition to previous understanding of the population of Neisseria meningitides (NM) carrier rate, antibody levels, living conditions, climate conditions, etc., also explored at home and abroad Some of the micro-factors. From the epidemic season of meningitis from 1990 to April, we conducted a survey on the bacteriostasis and the normal pharyngeal flora of the pharynx against the growth of the group A of bacteria in the population. In this survey, 125 healthy people in this county were investigated. 38 pharyngeal isolated from the inhibition of the growth of NMA group of bacteria, the inhibitory rate was 30.40%.