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目的查明福建省长乐市 8例广州管圆线虫病患者及其感染地是否为本病疫源地。方法对患者捕食的螺蛳与地点的调查 ;患者住处鼠粪病原体调查 ;现场拾取鼠粪 ,镜检广州管圆线虫 1期幼虫 ;捕捉患者捕食大瓶螺处的螺蛳进行病原体检查 ;现场捕捉该螺 ,去壳、厣后 ,取肌肉组织 ,用捣碎机捣碎 ,过滤沉淀 ,取上清液加入 2 0 %福尔马林溶液 ,离心 ,取渣检查广州管圆线虫 3期幼虫。结果鼠粪广州管圆线虫 1期幼虫感染率为39 3% (4 4 / 112 ) ;大瓶螺广州管圆线虫 3期幼虫感染率为 4 0 0 % (82 / 2 0 5 )。结论证实长乐市漳港镇龙峰村为广州管圆线虫的严重自然疫源地
Objective To find out whether eight cases of angiostrongyliasis and its infection in Changle City of Fujian Province are the origin of the disease. Methods Investigate the predatory snail and its location in the patient, investigate the murine pathogens in the patient’s house, pick up the mouse droppings on the spot, examine the first larvae of A. cantonensis, catch the snail of the predatory giant snail for pathogen examination, capture the snail in the field, After husking, the muscular tissue was removed, mashed with a stamping machine, the precipitate was filtered, and the supernatant was added to 20% formalin solution, centrifuged, and the slag was taken to examine the 3rd instar larvae of A. cantonensis. Results The larvae infection rate of the first instar larvae of M. gonorrhoeae was 39 3% (4 4/112). The 3rd larvae infection rate of A. cantonensis was 82.0% (82/250). The conclusion proves that Longfeng Village, Zhanggang Town, Changle City is a serious natural foci of A. cantonensis