关键词: 寄生虫, 感染率, 流行病学调查

Abstract: A survey on the present status of intestinal parasite infections was carried out in 6 selected spots in Pudong New Area, the suburbs of Shanghai in 1988-Of 2714 individuals examined, 1624 (66.2%) were proved to be infected with intestinal parasites. Multiple infections were common (18.9%). A total of 7 species of parasites were identified including 2 protozoa and 5 helminths. The infection rates of Ascaris lumbricoides, Trichuris trichiura, and Enterobius vermicularis were 25.9%, 44.6% and 23.7%, respectively. Low prevalence of hookworm (0.7%), Entamaeba coli (0.4%), Giardia lamblia (0.04%) and Hymenolepis diminuta (0.04%) were also noted in these areas.Being the predominant parasite, the prevalence of T. trichura varied from 14.2-69.4%, which was followed by Ascaris infection (7.3-60.8%). Most cases contracted light infection based on fecal egg count (EPG: Ascarias5000: Trichuris1000).The overall rate of intestinal parasite infection in inhabitants of Gao-qiao Town (24.2%) was found lower than that of the other 4 villages (45.4-82.0%). The rate for females (68.0%) was much higher than for males (63.3%). The highest infection rate of Ascaris and Trichuris was in the age group of 10-14 years, and a decrease tendency was revealed in those above 60 years old.