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河南省西峡县７个乡自１９９３年元月１９日至２月２３日，共发生流脑１５例，死亡４例。发病率为７．５／１０万，死亡率为２．０／１０万，病死率为２６．６７％。从患者脑脊液中分离出Ａ群脑膜炎奈瑟氏菌（Ｎｍ）和Ｂ群ＮＭ各１株。经中国预防医学科学院流研所应用单克隆抗体鉴定，它们的血清群：型：亚型分别为：Ａ：４：ｐ１．９和Ｂ：一：Ｐ１．１２。及时采取防制措施后，疫情得到有效地控制。这次暴发提示我们，今后应密切注意流脑疫情和Ｎｍ流行菌群变迁的可能性。
Seven townships in Xixia County, Henan Province from January 19, 1993 to February 23, 1993, a total of 15 cases of meningitis, 4 deaths. The incidence rate was 7.5 / 100,000, with a mortality rate of 2.0 / 100,000 and a case fatality rate of 26.67%. Neisseria meningitidis group A (Nm) and B group NM were isolated from the cerebrospinal fluid of patients. The Institute of Preventive Medicine, Chinese Academy of Medical Sciences monoclonal antibody identification, their serogroups: type: subtype were: A: 4: p1.9 and B: a: P1.12. After the preventive measures were taken in time, the outbreak was effectively controlled. This outbreak prompts us to pay close attention to the possibility of meningococcal epidemic and changes in the prevalence of Nm in the future.