关键词: 血吸虫病；牛；纵向观察；山丘型疫区

Abstract:

Objective To understand the endemic situation dynamics of schistosomiasis in domestic animals（mainly bo?
vine）in mountainous endemic regions，so as to provide the reference for evaluating the control effect and improving control strate?
gy. Methods Two representative pilots（Renmei and Dacang）in mountainous schistosomiasis endemic regions were selected for
survey. The schistosome infection status of bovine was investigated by the miracidium hatching method，the pasture of bovine were
investigated by home visiting，and the distributions of wild feces and Oncomelania snails，and the snail schistosome infection sta?
tus were also investigated in April and September every year. Results The schistosome infection rates of bovine reduced by
98.4% and 93.8% in two pilots in 2007 compared with those in 1993，and the infection intensities also showed a decline trend.
The infection rate of wild faces was 0 in Renmei pilot since 1995，while in Dacang pilot，the infection rate of wild feces fluctuated
in 2007，and the intensities of living snails and infected snails showed a declined trend. Conclusions Due to the special natural
environment of mountainous endemic regions，there is a dot?like or band?like distribution of endemic areas. The strengthening of
schistosomiasis examination and chemotherapy will rapidly reduce endemic situation. However，to completely interrupt the trans?
mission of schistosomiasis，we should emphasize environmental modification and domestic animal management

Key words: Schistosomiasis；Bovine；Longitudinal observation；Mountainous endemic region