关键词: 钩端螺旋体, 耕牛, 血清流行病学

Abstract: Objective To understand the situation of cattle infected by leptospirosis by nature way in our province,and provide a scientific basis for the prevention of leptospirosis.Methods The cattle serum collected from 4 counties of Jiangxi province was tested by microscopic agglutination test(MAT).Results There were 206 cattle serum samples.Of which,33 samples were positive,and the positive rate was 16.02%.12 kinds of Serum antibody were detected,and the positive rate of Icterohaemorrhagiae was the highest which was 6.80%.That of Canicola and Hebdomadis were all 3.40%.The highest GMT of these serum samples were Icterohaemorrhagiae,Hebdomadis and Canicola,and three kinds of GMT were all 1∶53.70.Conclusion The natural infection rate of cattle and its GMT were all low,but the virulence of the main leptospirosis strains that infected cattle was very strong.If the environment was favorable for the transmission of bacterium,the role of the cattle as infection source could not be ignored.