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目的分析常州市2013-2016年钉螺分布和螺情变化情况,为制定防控措施提供科学依据。方法收集2013-2016年常州市的螺情监测资料并进行统计分析。结果 2013-2016年常州市共查出有螺面积40.17 hm~2,其中新发现有螺面积30.63 hm~2。4年全市共解剖钉螺3 454只,未发现感染性钉螺。全市共查到有螺环境51个,其中江湖滩、内陆、山丘类型的有螺面积分别为12.13(30.19%)、25.54(63.57%)、2.51 hm~2(6.24%)。新发现有螺环境中,江湖滩、内陆类型的面积分别为8.00(26.12%)、22.63 hm~2(73.88%)。有螺原因主要是外来输入和邻近扩散。4年药物灭螺面积共计71.74 hm~2,巩固药物灭螺面积155.15 hm~2,改造有螺环境面积15.90 hm~2,改造历史有螺环境面积11.30 hm~2。结论内陆河道钉螺扩散是近年常州市新发螺情的关键,必须需加强监测和控制力度。
Objective To analyze the snail distribution and snail changes in Changzhou City from 2013 to 2016 and provide a scientific basis for making prevention and control measures. Methods The data of snail surveillance in Changzhou from 2013 to 2016 were collected and statistically analyzed. Results A total of 40.17 hm ~ 2 snails were found in Changzhou from 2013 to 2016, of which 30.63 hm ~ 2 were newly discovered. In 2004, a total of 3 454 snails were dissected in the city, and no infectious snails were found. A total of 51 snail environments were found in the city, of which 12.13 (30.19%), 25.54 (63.57%) and 2.51 hm ~ 2 (6.24%) respectively. In the newly discovered snail environment, the area of riverside beaches and inland types were respectively 8.00 (26.12%) and 22.63 hm -2 (73.88%). Snail causes are mainly external input and adjacent proliferation. The total area of drug snails in four years was 71.74 hm ~ 2, the area of drug snail consolidation was 155.15 hm ~ 2, the area of snail envelopment was 15.90 hm ~ 2, and the area of snail was 11.57 hm ~ 2. Conclusion The proliferation of snails in inland rivers is the key to the new situation in Changzhou in recent years. Monitoring and control must be strengthened.