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1971～1974年我们对本省钩端螺旋体病(以下称钩体病)进行疫源地调查,现已了解钩体病在我省的流行特征、传染源及菌群分布。分析报告如下。自然地理概况及流行病学特征一、自然地理概况我省分为淮北平原,江淮之间丘陵地带,江南山地丘陵地带3个区域。全省年平均气温在14～16℃,年平均降雨量在750～1800毫米、6～8三个月的降水总量占全年降水总量的35～60％。二、流行病学特征 1.淮北平原1962年发现病例,1971～1973年发生三次大流行,最高发病率达267.1/10万。由于暴雨后河水四处外溢,引起疫水扩散,人与之接触而流行。一般发洪后3～4天出现病例,8～14天达高峰,洪
From 1971 to 1974, we investigated the origin of Leptospirosis (hereinafter referred to as leptospirosis) in our province, and we have now learned the epidemiological characteristics, sources of infection and distribution of leptospirosis in our province. The analysis report is as follows. Natural geography and epidemiological characteristics of a natural and geographical overview of our province is divided into Huaibei Plain, between the JAC and hilly areas, southern hills and three regions. The annual average temperature in the province is between 14 and 16 ℃. The average annual rainfall is between 750 and 1800 mm. The total precipitation in 6 to 8 months accounts for 35 to 60% of the total annual precipitation. Second, the epidemiological characteristics 1. Huaibei Plain cases were found in 1962, 1971 ~ 1973 three major pandemic, the highest incidence of 267.1 / 100,000. Due to the spillover of river water after the torrential rains, it caused epidemic spread and contact with people. In 3 to 4 days after the flood occurs, 8 to 14 days reach the peak, flood