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长崎市家犬的犬恶丝虫感染率高。为了解影响其流行的因素。于1968—1983年在该市的东、西、南、北4个方位选点进行了3次犬恶丝虫流行病学调查。在上述地区共设44个调查点。自调查点内注册登记的家犬的耳缘取血涂片,染色后镜检计数微丝蚴。并在4个地区各选一个蚊媒调查点,于1972—1983年的每年5—10月,每周1次从下午6时至翌晨7时,用光捕法捕捉淡色库蚊。1983年长崎市家犬中犬恶丝虫总感染率为31.7％
Dogs in Nagasaki City have a high prevalence of Dirofilaria. To understand the factors that affect their popularity. In 1968-1983 epidemiological survey of Drosophila filaria was conducted in 4 locations in the east, west, south and north of the city. In the above areas a total of 44 survey points. Self-investigation points within the registration of domestic dogs ear smear, microscopic examination of microfilaria count after staining. And one mosquito vector survey point was selected in each of the four regions. From May to October in 1972-1983 and once a week from 6 pm to 7 am the light-captured method was used to capture Culex. In 1983, the total infection rate of Dirofilaria in domestic dogs in Nagasaki City was 31.7%