论文部分内容阅读
目的了解云南省登革热的疫情动态、人群抗体水平、媒介伊蚊种群(包括成幼虫孳生和密度变化)的动态变化、为登革热流行趋势的预测、预警和制定防治对策、措施提供科学依据。方法各级医疗、卫生、检疫机构的医务人员对疑似、临床病例进行及时发现和诊断;在流行季节前随机抽取正常人群血清,-20℃保存,用ELISA方法进行血清学检测;在6~10月采用定时、定点调查法,对登革热的主要传播媒介白纹伊蚊、埃及伊蚊的种群、孳生环境、伊蚊幼虫指数和成蚊密度进行监测,每月1次。结果2006年云南省发生输入性登革热病例18例;健康人群登革热IgG抗体阳性率8.09%。伊蚊幼虫密度布雷图指数(BI)、容器指数(CI)分别在14～98、4.7～73.68之间,白纹伊蚊成蚊密度在3.5～34只/人工小时之间。结论云南省输入性登革热疫情有不断上升的趋势;人群抗体水平登革热IgG抗体阳性率较高,提示当地人群中可能存在该病毒的既往感染或隐性感染;媒介伊蚊幼虫布雷图指数、容器指数和白纹伊蚊成蚊密度均较高,对登革热传播具有极高的危险性,应引起高度注意。
Objective To understand the epidemic situation of Dengue Fever, the population antibody level and the change of Aedes mosquito population (including larvae breeding and density change) in Yunnan province so as to provide a scientific basis for forecasting, early warning and formulating prevention and control measures of dengue fever epidemic. Methods The medical staff at medical, health and quarantine agencies at all levels timely detected and diagnosed suspected and clinical cases. Serum samples of normal people were randomly selected before the epidemic season and stored at -20 ℃. Serological tests were performed by ELISA. On a monthly basis, the site-specific survey method was used to monitor Aedes albopictus, Aedes aegypti populations, breeding environment, Aedes larval index and adult mosquito density, one of the major vectors of dengue fever once a month. Results In 2006, 18 cases of imported dengue fever occurred in Yunnan Province. The positive rate of dengue IgG antibody in healthy population was 8.09%. The Aedes larvae density Brett index (BI) and container index (CI) were between 14-98 and 47-73.68, respectively. The Aedes albopictus adult mosquito density ranged from 3.5 to 34 / artificial hours. Conclusions The incidence of imported dengue fever in Yunnan Province is on the rise. The positive rate of dengue IgG antibody in human antibody level is high, suggesting that the local population may have past infection or latent infection of the virus. The larval Brett Index and Container Index And Aedes albopictus adult mosquito density are high, the transmission of dengue fever is extremely dangerous, should be highly attention.