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1991年春季,我们对清丰县分别作了流行性脑膜炎疫区和非疫区,健康人群咽部正常菌群对A群NM生长抑制作用和带菌调查。结果发现:在乜庄村(疫区),A群带菌率为:10.8％,在后囤上村(非疫区),A群带菌率只占1.9％。非疫区A群NM生长抑制菌占34.55％疫区占19.35％。初步结果表明:两地区健康人群正常菌群对A群NM生长抑制,都随着年龄的增高而增多,抑制菌与A群NM之间呈负相关。
In the spring of 1991, we conducted epidemiological meningitis epidemic and non-epidemic areas in Qingfeng County, respectively. Normal population of pharynx in healthy population was investigated for growth inhibitory effect and carriage of A group of NM. The results showed that in Zhuangzhuang village (infected area), the infection rate of group A was 10.8%, and in the latter village (pest free area), the infection rate of group A was only 1.9%. A group of non-epidemic area NM growth inhibitory bacteria accounted for 34.55% of the epidemic area accounted for 19.35%. The preliminary results showed that: the normal population of healthy population in two areas inhibited the growth of NM of group A, both increased with age, and the inhibitory bacteria had negative correlation with NM of group A.