厦门地区广州管圆线虫的流行病学调查

调查了人体脑炎病原—广州管圆线虫在厦门地区的存在与散布情况。结果证实褐家鼠和褐马云玛瑙螺分别是该地区本线虫的终末宿主和中间宿主,其自然感染率分别为31.8％和34.1％;感染强度分别是平均13条成虫和24条幼虫。感染期幼虫在玛瑙螺体内以肺组织含虫率最高(72.0％),还讨论了生物和环境因子与本线虫自然感染的关系。

Investigations on the Epizootico of Angiostrongylus Cantonensis in Xiamen district, China

Surveys of Angiostrongylus cantonensis in rodents were made in Xiamen district of Fujian during the period from April 1983 to October 1984, and surveys of the larvae of Angiostrongy-lus cantontensis in snails were also made in the same area during the period from April 1982 to October 1983, and the results were as follows : 1)Twenty one of 66 Rattus norvegicus (31. 8%) in the Xiamen district were parasitized with A. contonensis, the mean worm burden is 13 per infected rat. No infection of A. cantonensis was found from 36 R. rattus in the same area. 2)The giant Afrint snails, Achatina fulica, was examined as intermediate host of A, canlonensis. Fouty five of 132 A. fulica(34. 1%) was parasitized with the 3rd-stage larvae, the worm-load of A. fulica average 24 per infected snail. Almost all of the snail parasitized with 3rd-stage larvae of A. cantonensis were measured between 4. 5 cm to 11 cm in size of the shell-length. The most densely infected organ in snail is the lung. These results indicated that there exists an endemic area of A. cantonensis in Xiamen district. This is the first geographical record in Fujian, China.