关键词: 寄生虫, 虫种分布, 调查

Abstract: This paper reports on the investigation of human parasite infections in 5 districts by random sampling with a coverage of 15 pilot sites in 5 counties/cities. A total of 7 958 people were under fecal examination, showing an overall infection rate of 94.7%. Of the discovered parasite species, 11 were nematodes, 2 taeniae, 9 trematodes and 8 protozoa. Fifteen species including Entamoeba hartmanni were the first records of the province; and Trichuris trichiura (66.7%), Ascaris lumbricoides (61.8%), hookworm (60.9%) and Enterobius vermicularis (39.6%) were the species associated with high infection rates. Nationality based analysis showed infection rates in Hans, Lis, Miaos and Huis being 93.8%, 94.6%, 97.1% and 98.4% , respectively. Polyparasitism occurred frequently. A. lumbricoides was generally in moderate intensity of infection, while that of T. trichiura and hookworm, in mild intensity. Parasite infection rates were higher in age groups of 5-9 years and 10-14 years. Trematode infections were analysed on the basis of different localities and populations. Control of parasitic infections in the province with emphasis on several important species was suggested.