云南省日本血吸虫病地理流行病学的探讨  

TENTATIVE STUDY OF GEOGRAPHICAL EPIDEMIOLOGY OF SCHISTOSOMIASIS JAPONICA IN YUNNAN PROVINCE

作　　者：谭鸿群 罗尧钜 张容[1] 张显清 袁本聪 王延安[1] 谢法仙[1] 

机构地区：[1]中国预防医学科学院寄生虫病研究所 [2]云南省大理州血吸虫病防治研究所 [3]云南省地方病防治办公室 [4]云南省大理州血吸虫病防治办公室

出　　处：《中国寄生虫学与寄生虫病杂志》1990年第3期187-190,共4页Chinese Journal of Parasitology and Parasitic Diseases

摘　　要：云南省日本血吸虫病流行于17个县、市,50年代至今钉螺面积2.19亿m^2,病人30.15万。由于自然地理和社会诸因素的综合作用,钉螺和血吸虫病的分布有强烈的地方性。在海拔1350～2450m,年均温11.8～19.5℃,年降雨量574～970mm地带,均有血吸虫病流行。而以海拔1800m左右,年均温15.7℃左右,年降雨量800mm左右的地带,人群血吸虫病感染率最高。水稻土带宜于钉螺孳生,更适宜于血吸虫病传播,亦常常是血吸虫病严重流行地带;红壤土带仅有少数钉螺孳生,血吸虫病流行程度轻;棕壤和高山草甸土带不宜钉螺孳生,未发现血吸虫病。Schistosomiasis prevails in 17 counties and cities in Yunnan Province.Approximately, a population of 301 511 were affected and the snail-ridden area amounted to 219 000 000m2 in the past years. These endemic areas were not evenly distributed, but rather scattered.The endemic foci were vertically distributed at an altitude of 1 350-2 450 metres above sea level. Human cases were found mostly in areas with an elevation of ≥1 800 metres, and became progressively fewer with the ascent. However, in areas with an-elevation of ≤1800 metres, the infection rate in the inhabitants decreased with the descent.In areas with an average temperature of 11.8-19.5℃ and the annual rainfall up to 574-970mm, transmission of the Schistosomiasis was always present, suggesting an annual mean temperature around 15.7℃ and rainfall 800-900mm were favourable factors for Schistosomiasis transmission.The cultivated areas with paddy soils were most suitable for the breeding of Oncome-lania snails, where Schistosomiasis was severely prevalent. Only a few Oncomelania snails and patients were observed in areas covered with red loam. No patient or snail was found in areas with brown loam or mountain meadow soil.

关 键 词：日本血吸虫病 地理流行病学 钉螺 

分 类 号：R532.210.1[医药卫生—内科学]