北京市郊大兴、通县和密云县人群寄生虫感染情况的调查

1988—1989年北京市郊通县、密云县、大兴县27个点,13 730人的人体寄生虫感染调查结果,感染率为39.0％。查见人体寄生虫10种,其中蠕虫4种、原虫6种。蛔虫感染率为30.7％,蛲虫的为20.1％,鞭虫、贾第虫的分别为1.3％和1.2％。蛔虫山区的感染率(41.3％)高于平原地区(17.4-31.6％),农村高于城镇。蛔虫的感染度亦以山区较重,5—9岁组感染率最高。但与1978年的部分地区调查结果相比,感染率明显下降,可能是改革开放后,农村经济卫生条件改善的结果。

SURVEY OF HUMAN PARASITES IN DAXING, TONGXIAN AND MIYUN COUNTIES, BEIJING SUBURBS

Twenty-seven pilot sites were selected from three counties of Beijing suburbs according to different topography and socioeconomic status. Iodine direct smear, Kato-Katz thick smear and adhesive-tape techniques as well as fecal culture method were applied for parasitological diagnosis.Of 13730 residents from the investigated sites, the overall parasitic infection rate was 39%. Ten species of protozoa, nematode, and trematode were found in the population. Among these species, the respective infection rates for Ascaris lumbricoides, Enterobius vermicularis, Trichuris trichiura, and Clonorchis sinensis were 30.7%, 20.1%, 1.3% and 0.1%, respectively. Entamoeba hartmanni, Endolimax nana, and 1odamoeba buetschlii were recorded for the first time in these counties.The highest rate and intensity of ascarid infection was observed in mountainous district and rural areas, however, while comparing with the data recorded in Tongxian in 1978, a marked decrease was noted, probably resulting from, the improvement of economic and sanitary conditions in the suburbs since reformation.