Abstract:

【Abstract】 Objective  To understand the current status and characteristics of the snail distribution in Zongyang County for following strategies in urgent control, prevention and survey of the schistosomasis.  Methods  Prevalence of snails were surveyed in 2015 throughout Zongyang County, and the data were collected and compared with those obtained from 2013 to 2014. Results  The area prevalent with snails were 1 542.8hm2 in 2015, located in 28 administrative villages of 8 towns. Snails were seen in 16.59% of the frames surveyed, and the average density of living snails was 0.776/0.11m2. None infected snails were found. Snails were mainly distributed in the marshland, bottomland and lake shore in strip fashion, which accounted for 95% of the total living snails area. Snails were less prevalent in inland areas, and scattered in the ditch, pond and settings near the residential areas. The areas with snails were decreased in 2015 across the county compared to the past two years, and no infected snails were detected. Conclusion  The area with snail generally tends to decline in Zongyang County, however, the gain in prevention and control of snails should be consolidated in following tasks.

Key words: Snails, Investigation, Zongyang County