藐小棘隙吸虫病感染方式的研究

经流行病学调查及实验研究表明，居民感染藐小棘隙吸虫系由于生饮含有该吸虫见蚴的水或食入其活囊蚴。经常喝生水的居民的感染率为20.1％，较不喝生水居民的感染率1．5％高12．6倍。该地水体中仅检到该吸虫尾蚴．未发现囊蚴。因此可以认为，藐小棘隙吸虫感染人体的主要方式是尾蚴直接经口，而囊蚴经口感染为次要。

STUDIES ON MODE OF HUMAN INFECTION WITH ECHINOCHASMUS LILIPUTANUS

Epidemiological survey and experimental studies on the mode of human infection with Echinochasmus liliputanus were carried out in Chenqiaozhou Village 9 Hexian County, Anhui Province in 1992. The results showed that humans could be infected through drinking unboiled water containing E. liliputanus cercaria or eating raw fish containing the metacercaria.The infection rates of E. liliputanus were 1. 5% in the inhabitants who did not drink raw water,and 20. 1% in those who used to drink raw water. It was only the cercaria, not the metacercaria that was detected in the water from ponds of this village. None of the investigated inhabitants ate uncooked fish. The results indicated that drinking raw water containing E. liliputanus cercaria was a major way through which a humans were infected and eating food containing the metacercaria was a minor mode of human infection.