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目的分析丹徒区三洲村国家血吸虫病监测点2009年疫情动态与变化,为评价防治效果和制订防治对策提供科学依据。方法按照《全国血吸虫病疫情监测方案》开展人畜病情和螺情等疫情监测并对监测数据进行统计分析。结果监测区2009年人群血清学间接血凝试验(IHA)阳性率2.6%(20/768),感染率为0.13%(1/768),未发生血吸虫急性感染病例和新发晚期血吸虫病病例,家畜感染率为0。共查出有螺面积为28.5万m2,其中感染性钉螺面积17万m2、活螺和有螺框出现率分别为1.5只/框和26.24%,感染性钉螺平均密度和钉螺感染率分别为0.002 5只/框和0.17%。结论监测区居民血吸虫病感染率维持在较低水平,家畜已不是监测区内的主要传染源,但江滩有螺面积和感染性钉螺面积仍较大。建议在加大灭螺措施的同时对江滩感染性钉螺形成原因进行调查,明确各类宿主在血吸虫病传播中的作用和地位,采取针对性防治措施。
Objective To analyze the epidemic situation and change of national schistosomiasis monitoring points in Sanzhou Village, Dantu District in 2009 so as to provide scientific basis for evaluating the control effect and making prevention and control measures. Methods According to the “national schistosomiasis surveillance program” to carry out human and animal disease and snail epidemic situation monitoring and monitoring data for statistical analysis. Results The positive rate of IHA in the surveillance area was 2.6% (20/768) in 2009 and the infection rate was 0.13% (1/768). There were no cases of acute schistosomiasis infection or newly diagnosed advanced schistosomiasis. Livestock infection rate is 0. A total area of 285,000 m2 was found, of which the area of infectious snails was 170,000 m2. The occurrence rates of live snails and screwed snails were 1.5 / box and 26.24% respectively. The average density of infective snails and the infection rate of snails were 0.002 5 / box and 0.17%. Conclusions The infection rate of schistosomiasis in the monitoring area is kept at a low level. Livestock is not the main source of infection in the monitoring area. However, the snail area and the infected snail area are still large. It is suggested that the cause of infecting snails should be investigated at the same time as the snail-killing measures should be intensified. The role and status of various hosts in the transmission of schistosomiasis should be clarified and targeted prevention measures should be taken.