[Investigation on unhealthy related behaviors of echinococcosis patients in Garzê Prefecture, Sichuan Province].

Objective: To understand the unhealthy related behaviors of echinococcosis patients in Tibetan region in Sichuan Province, so as to provide the references for the health education of echinococcosis.

Methods: The echinococcosis patients who were registered in the Tibetan region in Sichuan Province were selected as target population. The basic situation and unhealthy related behaviors of them were surveyed by individual interviews.

[Effects and cost of four formulations of niclosamide ethanolamine salt in snail control in field].

Objective: To investigate the effects and cost of four formulations of niclosamide ethanolamine salt in snail control in the field in marshland and lake regions, so as to provide the evidence for drawing up the plan of molluscicide using in schistosomiasis endemic areas.

Methods: One drainage channel and one channel without water in the same area with snails in Jiangling County, Jingzhou City were selected as the research fields. The drainage channel was divided into 9 sections, except one section as a blank control group where the natural death rate of snails was observed only, and the remaining 8 sections were taken as the observation groups, where different dosages of 4% niclosamide ethanolamine salt powder, 5% niclosamide ethanolamine salt granules, 25% niclosamide ethanolamine salt suspending agent, 26% metaldehyde and niclosamide ethanolamine salt suspending agent, and 50% niclosamide ethanolamine salt wettable powder were used respectively.

[Development and application of Jingcen DY-1 spraying tanker for Oncomelania hupensis snail control].

Objective: To develop a Jingcen DY-1 type spraying tanker for Oncomelania hupensis snail control and evaluate its effect of field application as well as the cost.

Methods: The currently available tractor was used as a vector, and the mechanical and electrical equipments and containers were integrated with shafts, pipelines and electric lines to produce a spraying tanker for snail control, with the functions of carrying people and molluscicides, generating electric power and getting water, mixing stocking solutions, adjusting molluscicide solutions evenly, and spraying drugs. The volume of the molluscicide solution, flow rate of water injection, and the flow rate, range and advance speed of the spray gun were tested, and the solution concentrations of molluscicide in the tanker and at the muzzle of the spray gun at different time were detected.

[ snail control effects of molluscicides with different formulations in field in marshland and lake regions].

Objective: To observe the snail control effects of molluscicides with different formulations in the ditch with unstable water level in field of marshland and lake areas, so as to provide the evidence for formulating the prevention strategies.

Methods: A drainage channel with snails in Jiangling County, Jingzhou City were selected as the study field, then it was divided into 6 segments, except 1 segment was treated as the blank control group for observing the natural mortality rate of the snails, the other 5 segments were treated as observation groups, where 4% niclosamide ethanolamine salt powder, 5% niclosamide ethanolamine salt granule, 25% suspension concentrate of niclosamide ethanolamine salt, 26% suspension concentrate of metaldehyde and niclosamide ethanolamine salt, 50% niclosamide ethanolamine salt wettable powder were applied respectively. Before and after the mollusciciding, the snail surveys were carried out through the systematic sampling method, and the short- and long-term effects of snail control were observed, and the mortality rates of the snails on the slope above the water level and those below the water level were compared.

[Analysis of endemic situation of schistosomiasis in Jingzhou City from 2004 to 2014].

Objective: To analyze the change of endemic situation of schistosomiasis in Jingzhou City of Hubei Province, so as to provide evidence for the development of future control strategy.

Methods: The data of endemic situation of schistosomiasis and the implementation of integrated control measures were collected and analyzed in the 9 counties (districts, cities) of Jing-zhou City from 2004 to 2014.

Results: The endemic situation of schistosomiasis appeared a decline year by year since 2004.

[Effect of schistosomiasis control in Jingzhou City from 2009 to 2013].

Objective: To evaluate the effect of schistosomiasis control in Jingzhou City of Hubei Province from 2009 to 2013, so as to provide the reference for the establishment of control strategy in the future.

Methods: The annual reports on schistosomiasis control from 2009 to 2013 in nine counties (cities, districts) in Jingzhou City were collected and analyzed sta- tistically.

Results: The estimated number of schistosomiasis patients in Jingzhou City dropped from 78 903 in 2009 to 28 034 in 2013, with a reduction rate of 63.

[Application effect of Oncomelania hupensis snail crushers in batch detection].

Objective: To evaluate the application effect of Oncomelania hupensis snail crusher in batch detection.

Methods: The O. hupensis snail crushers and triangular flasks for cercariae shedding were made.

[Investigation on field feces in schistosomiasis endemic areas in Jingzhou City].

Objective: To understand the status of field feces in Jingzhou City, so as to provide the evidence for improving the control measures to interrupt the transmission routes of schistosomiasis.

Methods: The distribution of field feces was investigated in 27 schistosomiasis endemic villages in Gong' an, Jianli, Jiangling, Honghu and Shishou counties (cities) from 2010 to 2012. The schistosome positive status of the field feces was surveyed with the hatching method.