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为了解山西省流行性乙型脑炎 (乙脑 )的流行状况 ,对该省 1994～ 1999年的乙脑疫情报告和血清学诊断病例做了分析。对 1994、1998年该省乙脑两个高峰期的疑似乙脑病人的血清 ,采用反向被动血凝抑制试验检测了血清特异性抗体和IgM抗体。结果显示 :1994～ 1999年共报告乙脑病例 1796例 ,绝大多数是经临床诊断的 ,经实验室检测的仅 399例 ,占 2 2 2 % (399/ 1796 ) ,确诊 188例 ,10 5 % (188/ 1796 )。 1994、1998年 2 31例疑似乙脑病人 ,经血清学确诊 115例为乙脑 (4 9 8% )。此 115例分布在该省 9个地区 (市 ) ,>40岁中老年人占 5 0 %以上。中老年人接种乙脑疫苗 ,对降低乙脑发病率十分必要。
In order to understand the prevalence of Japanese encephalitis (JE) in Shanxi Province, the epidemic situation and serodiagnosis of JE in the province from 1994 to 1999 were analyzed. Serum specific antibodies and IgM antibodies were tested using the reverse passive hemagglutination inhibition test against sera from patients with suspected JE at both peak levels of JE in the province in 1994 and 1998. The results showed that a total of 1796 JE cases were reported from 1994 to 1999, the vast majority of which were diagnosed clinically. Only 399 cases (232/396) were detected by laboratory tests, 188 cases were diagnosed, and 105 % (188/1796). In 1994 and 1998, 231 cases of suspected JE patients were serologically confirmed as JE (49.8%). The 115 cases were distributed in 9 provinces (cities) in the province, and over 40% of middle-aged and elderly people accounted for over 50%. Middle-aged and old vaccination of Japanese encephalitis vaccine, to reduce the incidence of Japanese encephalitis is very necessary.