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目的了解云南省高原峡谷地区急性血吸虫病发病特点和控制效果。方法 2004-2014年每年在云南省洱源县(高原峡谷型血吸虫病流行区)历史有螺面积上反复查灭螺、对阳性螺区的阳性螺点实施春秋2次灭螺,对上年发生急感的自然村6~60岁居民扩大保虫宿主的化疗,并采取有螺地带禁牧,改水,改厕,控制传染源及中小学生上血防课健康教育措施。结果 2004-2014年洱源县人群血吸虫感染率由9.18%下降至0.24%,下降97.12%;家畜感染率由2004年的6.02%下降至0.52%;钉螺自然感染率由0.53%下降至0;阳性螺点由2004年的460点下降至0;2004-2006年共发生急性血吸虫病11例、2007-2014年无急性血吸虫病患者发生。结论 2004-2014年洱源县血吸虫病疫情得到有效控制,人群及家畜血吸虫感染率明显降低,已无阳性螺点。
Objective To understand the characteristics and control effects of acute schistosomiasis in plateau and canyon area of Yunnan Province. Methods From 2004 to 2014, the snails were repeatedly screened on the historical snail area in Eryuan County, Yunnan Province (the endemic area of plateau-type schistosomiasis in Yunnan Province), and the snail spots on the positive snail area were subjected to 2 snails in spring and autumn for the previous year Residents of 6 to 60 years old in the acute village of natural disasters expanded the chemotherapy for the host of the insect protection and adopted the banning and changing of water in the snail strip, changing the toilet, controlling the source of infection, and the health education measures for preventing blood stasis in primary and secondary schools. Results The infection rate of schistosomiasis in Eryuan County from 2004 to 2014 decreased from 9.18% to 0.24%, down 97.12%. The infection rate of domestic animals dropped from 6.02% to 0.52% in 2004; the natural infection rate of Oncomelania snails decreased from 0.53% to 0; the positive rate Spiral points dropped from 460 in 2004 to 0; in 2004-2006, there were 11 cases of acute schistosomiasis and no cases of acute schistosomiasis in 2007-2014. Conclusion The epidemic situation of schistosomiasis in Eryuan County was effectively controlled from 2004 to 2014, and the prevalence of schistosomiasis in the population and livestock was significantly reduced. There was no positive snail point.