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目的分析人感染H7N9禽流感病毒患者的发病、诊治和流行情况,自然因素与社会因素对流行3个环节的影响,提出疫情控制措施。方法描述流行病学和分析流行病学方法,收集人感染H7N9禽流感患者三间分布情况及组合等资料,分析流行特点、影响因素和控制措施。结果共收集确诊人感染H7N9禽流感134例病例,死亡43例,分布11个省市,沪皖苏为多,占发病数的79.1%;4月发病108例,占80.6%,3、4月发病占96.3%;收集到年龄、性别、接触史等资料的病例为128例,平均年龄为56.8岁,51岁以上达91例,占71.1%,>60岁65例,占50.8%;男性发病是女性的2.2倍;入院重症病例占患者的75.6%;收集到86例病例职业信息,农民和退休人员占统计数的61.6%;收集到1737名密切接触者均无发病;气温升高,湿度降低、雨水减少、停止活禽交易等措施,能有效控制疫情。结论人感染H7N9禽流感又是一起新出现的传染病(emerging infectiois diseases;EID)EID的典型案例,传染和流行特征未明,要加强疫情监测,研究自然因素与社会因素的作用,提出防控措施。
Objective To analyze the incidence, diagnosis, treatment and prevalence of H7N9 human avian influenza virus (H7N9) virus in humans, and to determine the epidemic control measures by considering the influence of natural factors and social factors on the epidemic. Methods Descriptive epidemiological and epidemiological methods were used to collect information on the distribution and combination of three human cases of H7N9 avian influenza infection and to analyze the epidemiological characteristics, influencing factors and control measures. Results A total of 134 cases of H7N9 bird flu were collected from 43 confirmed cases of H7N9 infection in 11 provinces and cities, accounting for 79.1% of the total number of cases; 108 cases (80.6%) in April, and 3 to 4 months The incidence was 96.3%. There were 128 cases with age, sex, history of exposure and so on. The mean age was 56.8 years old, 91 cases 51 years old or older, accounting for 71.1%, 65 years old> 60 years old, accounting for 50.8% 2.2 times as many as women; 75.6% of patients admitted to hospital were serious cases; 86 cases were collected occupational information, farmers and retirees accounted for 61.6% of the total number of cases; 1737 close contacts were collected; Reduce, reduce rain, stop live poultry trade and other measures, can effectively control the outbreak. Conclusions Human infection with H7N9 bird flu is a typical case of emerging EID. The epidemiological characteristics of infection and epidemic are unknown. It is necessary to strengthen the surveillance of epidemic situation, study the role of natural and social factors, and propose prevention and control measures .