The geographic distribution of leptospirosis in Yunnan Province
Yang, W.Y.
Zhonghua Liu Xing Bing Xue Za Zhi 9(5): 257-260
1988
ISSN/ISBN: 0254-6450 PMID: 3067858 Document Number: 314894
According to the morbidity and infection rate in human, the pathogen carrying rate of reservoir animals and refer to the geographic weather and altitudes, the Stereoscopic distribution of leptospirosis may be divided into three different geographic levels in Yunnan. Their epidemic rules are: The areas of hot weather and low altitude are heavy epidemic level where the morbidities of leptospirosis are as high as 229.apprx.626/100,000, and the infection rate of human being is 26.apprx.30%. The areas of temperate weather and middle altitude are epidemic level of moderate degree. Those areas have a morbidity about 100/100,000 and infection rate of 12 .apprx. 14%. The areas of cold weather and high altitude are epidemic level of light degree. Those areas have a morbidity smaller than 10/100,000 and infection rates between 0.8% and 6.0%. The geographic altitude has a relationship of reverse ratio with the distribution of morbidity and infection rate of leptospirosis. The result of altitude and morbidity analysed by interrelation regression shows close linear negative interrelation (r = -0.964). Interrelation regression with the oinfection rate analysis shows highly cubic negative interrelation (r = 0.987). This further demonstrates the epidemic rules of different geographic distribution of leptospirosis.