辽宁省10个市人群寄生虫感染情况的调查

在辽宁省10个市调查75个点37 978人,查出17种人体寄生虫,其中蠕虫10种,原虫7种,总感染率为64.0％。感染1、2、3和4种虫的人数分别占调查人数的54.7％、9.1％、0.2％ 和0.01％。各种寄生虫的感染率为蛔虫57.5％、蛲虫(14岁以下儿童)14.4％,鞭虫8.3％、结肠内阿米巴0.5％、溶组织内阿米巴0.2％、带绦虫0.1％、华支睾吸虫0.1％。蛔虫、蛲虫和鞭虫感染率,女性分别为58.9％、15.9％和8.8％;男性分别为56.2％、13.1％和7.9％。蛔虫、鞭虫感染以0-4岁儿童较低,其余各年龄组均较高。在5个片区中,辽中平原、辽北丘陵地区感染率(44.5％,49.6％)低于其它片区(72.9％、75.5％、82.8％)。结肠小袋纤毛虫、东方毛圆线虫、异形科吸虫均为本省首次发现。

SURVEY OF HUMAN PARASITE INFECTIONS IN 10 CITIES OF LIAONING PROVINCE

A survey of human parasites was conducted in 10 cities of Liaoning Province, which were selected according to different topography and socioeconomic status. Fecal examination by using Iodine direct smear, Kato-Katz thick smear, adhesive-tape techniques and fecal culture were carried out. Of 37 978 people residing in the studied sites, the overall parasite infection rate was 64.0%, being lower in the middle and northern parts (44.6-49.6%), and higher in the eastern, western and southern parts (72.9-82.8%) of this province. Multi-parasitism by 1, 2, 3 or 4 species of parasites accounted for 64.7 %, 9.1 %, 0.2 % and 0.1 %, respectively. High infection rate of Ascaris lumbricoides (64.1-61%) and Trichuris trichiura (9.3-17.6%) was seen in all age groups over 5 years, higher in females than in males. The infection rate of En-terobius vermicularis in children under 14 years old is 14.4%.There were 17 species of parasites discovered, comprising Entamoeba histolytica, Entamoeba coli, lodamoeba buetschlli, Entamoeba hartmanni, Enfamoeba nana, Giardia lamblia, Balantidium coli, Ascaris lumbricoides, Trichuris trichiura, Ancylostoma duo-denote, Enterobius vermicularis, Trichostrongylus sp., Clonorchis sinensis, Heterophyes sp., tapeworm, Hymenolepis nana, Macracanthorhynchus hirudinaceus. Among them Balantidium coli, Heterophyes sp. and Trichostrongylus sp. were recorded for the first time in Liaoniag Province.