Effect analysis of strategy on Oncomelania snail control in Qixia District of Nanjing during 2005-2014
Objective To understand the fluctuation and distribution of Oncomelania snails in Qixia district,and to discuss the strategy and measures of snail control.Methods The retrospective survey was performed.Index of snail in Qixia District from 2005 to 2014 was compared and the relationship between the area of snail distribution and coverage of snail control was analyzed.Results The area of snail was decreased by 54.65％from 6 554 215 ha to 3 581 591 ha by comprehensive treatment for marshland and rivers connecting to Yangtze River.Live snail density dropped from 6.520 to 2.050 per 0.11 m2.The rate of snail found frame was decreased from 81.5％to 16.5％.It showed a negative correlation(r=-0.879,P＜0.05)between the area of snail and the coverage rate of snail control.Infected snail was eliminated in 2010,and the standard of transmission control was thus achieved.Conclusions The strategy of strengthening snail control,molluscicides and comprehensive control is effective to control the snails in the distribution area of snails.The monitoring on snail situation needs to be enhanced for consolidate the results of control.
SchistosomiasisOncomelania snailFluctuationStrategyQixia District
NETL
NSTL
万方数据
维普
