地质地貌对鹤庆县血吸虫病流行和控制的影响

目的了解云南省鹤庆县地质地貌对血吸虫病流行和控制的影响。方法收集全县和血吸虫病流行区的基本情况、血吸虫病防治的疫情资料和地质地貌资料并进行整理分析。结果鹤庆县血吸虫病不同的流行类型、流行程度、地层、地形与地貌、土壤分布地区的血吸虫病疫情程度和控制程度不一,2011年全县查出病人数、现存晚期血吸虫病（以下简称晚血）病例、血吸虫人群感染率、钉螺面积较历史累计病人数、历史累计晚血病人数、1970年血吸虫人群感染率、历史累计钉螺面积分别下降了99.99%、80.89%、99.99%、96.41%,没有发现感染性钉螺。结论探索和研究血吸虫病流行地区的地理因素、环境变化与血吸虫病传播的关系,对防治工作有一定的指导意义。

Impact of topography and geomorphology on prevalence and control of Schistosomiasis in Heqing County

Objective To understand the impact of topography and geomorphology on the prevalence and control of schistosomiasis in Heqing County,Yunnan province. Methods The data concerning schistosomiasis epidemic,stratum, topography and geomorphology in Heqing County,epidemic situations of Schistosomiasis prevalence and control and the relative topography and geomorphology data. Results The infectious intensity and control of schistosomiasis in Heqing County varied depending on different prevalent types,prevalent severity, stratums, topography and geomorphology and certain soil distribution. The quantity of schistomiasis cases, the number of survived schistosomiasis cases at advanced stage,the human infection rate and snail area in 2011 dropped by 99.99% ,80.89% ,99.99% and 96.41% ,respectively compared to historily accumulated number of cases,historily accumulated number of schistomiasis cases, schistosomiasis infection rate in 1970 and the historically accumulated snail area in the whole county. No positive snails were detected. Conclusion To explore the impact of geographical factors and environmental changes on the transmission of schistosomiasis in endemic areas is of certain significance in guiding the prevention and control of schistosomiasis.