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[目的]分析2009年乳山市1~3月戊型病毒性肝炎疫情流行特征和原因。[方法]对2009年1~3月份疫情网络法定报告的36例戊型病毒性肝炎病例逐一进行流行病学调查,使用统一调查表格收集个案发病基本情况。[结果]2009年1~3月戊型病毒性肝炎发病与往年基本一致。33例职业为农民(占91.67%),发病年龄均在40岁以上;有2例(占5.56%)经常在外就餐,10例(占27.78%)发病前有次数不等的聚餐史;有30例(占83.33%)发病前曾食用过海虹、蚬子、牡蛎等贝类海产品,16例(占44.44%)发病前吃过生葱、生韭菜等生蔬菜,28例(占7.78%)没有饭前便后洗手的良好习惯。[结论]36例戊型病毒性肝炎个案间均不存在关联性,为散发病例,仅2例可能存在家庭聚集性。发病前吃过海产品、生蔬菜,以及农民的不良卫生习惯可能是发病的主要原因。
[Objective] To analyze the epidemiological characteristics and causes of epidemic of encephalitis in Rushan from January to March in 2009. [Method] The epidemiological investigation of 36 cases of hepatitis E virus by statutory report of epidemic situation network from January to March in 2009 was conducted one by one, and the basic situation of case incidence was collected by using the unified questionnaire. [Results] The incidence of hepatitis E between January and March 2009 was basically the same as in previous years. 33 cases were farmers (accounting for 91.67%), the age of onset was over 40 years old; 2 cases (5.56%) often dined outside, 10 cases (27.78% 16 cases (44.44%) eaten raw vegetables such as raw onions and leeks before onset, 28 cases (accounting for 7.78% of the total) There is no good habit of washing your hands after meals. [Conclusion] There is no correlation between 36 cases of hepatitis E virus cases and the sporadic cases, only 2 cases may have familial aggregation. Pre-onset eaten seafood, raw vegetables, as well as poor health habits of farmers may be the main cause of the disease.