犬恶丝虫(Dirofiaria immitis Leidy,1856)为寄生于犬心脏内的线虫。雌虫产出的幼虫为微丝蚴,进入血循环后,可通过多种蚊子传播。近年来,国外有关人体感染犬恶丝虫的调查报道较多,迄今已有数百例病例报告。国内近20年来报道较少。我国在1963年以前,曾在北京、辽宁、广东等17个省市自 Dirofiaria immitis Leidy (1856) is a nematode parasitized in the dog’s heart. Female larvae produced by microfilaria larvae, into the blood circulation, can be transmitted through a variety of mosquitoes. In recent years, foreign reports of human infection of Dirofilaria more reported, so far there have been hundreds of case reports. Less reported in the past 20 years. Before 1963, China had self-employed in 17 provinces and cities such as Beijing, Liaoning and Guangdong