关键词: 血吸虫病；三峡庠区；社会经济；传播

Abstract:

 Objective To understand the impacts of socioecononuc development on schistosomi-
asis transmission in the Three Gorges Reservoir Areas (TGRA). Methods Approaches including
epidemiology, immunology and socio-medical survey were applied'to investigate the potential risk
factors which would involve the importation of infectious resources of the mobile and migrant popu-
lation, and livestock, and the import of Oncomelania snails, and to explore the potential impact of
the socioeconomic development on schistosomiasis transmission in the reservoir areas. Results It is
possible that snail and arumal infectious resources will be introduced into TGRA by importing flow-
ers, trees and livestock. Among the migrant population in the survey, 31. 43% had infected with
schistosomiasis, 37 27% had contacted with the infested water, and the positive rate of immunolo-
gy tests was l.18%. The migrant population will be the mainly infection source. Orange industry,
travel industry, animal husbandry and fishery will develope preferentially in the future of TGRA.
However, the development of animal husbandry, fishery and travel industry will increase the risk of
the import of infection source and snails to TGRA. Conclusions TGRA would become a potential
schistosomiasis endemic areas since the changes of socioeconomic condition. We should insist on the
surveillance and supervising to prevent the transmission of schistosomiasis in TGRA.

Key words:  Schistosomiasis, Three Gorges Reservoir Area, Socioeconomic, Transmission