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[目的]调查分析本起乙脑疫情发生的原因和特点,为本地乙脑的防控提供依据。[方法]采用流行病学调查和乙脑诊断标准及处理原则进行,灯诱法调查蚊种。[结果]2009年的所有乙脑病例集中在7月发病,共10例,均为农村病例,其中8例在黄陂区,年龄10月～7岁。8例病例无明确的乙脑疫苗接种史。疫点健康儿童血清中抗乙脑IgG抗体阳性率96.27%,抗乙脑IgM抗体阳性率5.56%。病家周围环境蚊种构成中三带喙库蚊占71.63%,三带喙库蚊中雌蚊占99.80%。[结论]儿童未有效接种乙脑疫苗和环境中存在乙脑病毒的传播媒介是本起疫情发生的重要原因,加强适龄儿童疫苗接种和改善环境卫生是防控乙脑的重要措施。
[Objective] To investigate and analyze the causes and characteristics of the outbreak of JE epidemic and provide evidence for the prevention and control of JE. [Methods] Epidemiological survey and diagnostic criteria of JE and treatment principles were conducted. [Results] All cases of JE in 2009 were concentrated in July, a total of 10 cases were rural cases, of which 8 cases were in Huangpi District, aged from 10 months to 7 years old. 8 cases no clear history of JE vaccination. The positive rate of anti-Japanese encephalitis IgG in serum of healthy children was 96.27% and the positive rate of anti-JE IgM was 5.56%. The mosquito species in the surrounding environment of the patients accounted for 71.63% of the three Culex tritaeniorhynchus and 99.80% of the female Culex tritaeniorhynchus. [Conclusion] The lack of effective vaccination of JE vaccine and the presence of JE virus in the environment of children is an important reason for the outbreak of this outbreak. Strengthening the vaccination of school-age children and improving environmental hygiene are important measures to prevent and control JE.