Environmental Factors Affecting Freshwater Snail Intermediate Hosts in Shenzhen and Adjacent Region, South China.

Sound knowledge of the local distribution and diversity of freshwater snail intermediate hosts and the factors driving the occurrence and abundance of them is crucial to understanding snail-borne parasitic disease transmission and to setting up effective interventions in endemic areas. In this study, we investigated the freshwater snails, water quality parameters, physical characteristics of habitats, predators and competitors, and human activity variables at 102 sites during December 2018 and August 2019 in Shenzhen and adjacent areas in China. We used decision tree models and canonical correspondence analysis to identify the main environmental and biotic factors affecting the occurrence and abundance of snail species.

[Challenges and countermeasures for water conservancy combined with schistosomiasis prevention and control in China in new era].

The spread of schistosomiasis seriously threaten the health of people and hinder the economic and social development in China. The water conservancy combined with schistosomiasis prevention and control effectively controlled the spread of schistosomiasis by controlling the spread of , the only intermediate host of . This paper reviews the evolution of the strategy of schistosomiasis prevention and control in China and points out the historical role of water conservancy combined with schistosomiasis prevention and control.

[Problems and improvements of water conservancy projects combined with schistosomiasis control in river beaches].

Water conservancy projects combined with schistosomiasis prevention and control are crucial measures to change the habitats of Oncomelania hupensis and are helpful for schistosomiasis control. In this paper, the epidemic characteristics of O. hupensis in lake regions are elaborately analyzed.