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为了解人间自然感染各群钩端螺旋体（钩体）后产生的免疫抗体血清群、交叉凝集（交凝）、效价及相互关系，作者对病原学阳性并做过双份血清ＭＡＴ的６４份资料作了综合分析，结果表明：６４株钩体属于１２个群，其中１３株菌的感染者血清呈阴性反应，占２０．３１％；５１例呈阳性，占７９．６９％，有１４个血清群，效价１∶１００～１∶６４００；１２个菌群感染者的血清交凝反应较为普遍，效价１∶１００～１∶３２００；效价高低及交凝群数，因感染菌群而异。较为特殊的是１１个菌群感染者的血清中均不见与流感伤寒群钩体的交凝现象。本文对人间分离钩体菌群与免疫血清群构成比例互不吻合的问题作了解释，为钩体病的免疫及血清流行病学补充了新论据
In order to understand the natural human immunodeficiency virus serogroups, cross-agglutination (cross-coagulation), titer and correlation of each group caused by Leptospira (leptospira), the author of the etiology positive and done double serum MAT of 64 The results showed that 64 leptospira belonged to 12 groups, of which 13 strains were infected with seropositivity, accounting for 20.31%; 51 cases were positive (79.69%) and 14 Serogroups, titer 1:100 ~ 1:6400; 12 bacterial infections in patients with serum cross-reaction is more common, titer 1: 100 ~ 1: 3200; Different. What is more special is that there is no cross-coagulation phenomenon between the 11 strains of infected persons and the hooks of influenza typhoid fever. In this paper, the problem of non-coincidence between the composition of human isolates and immune serogroups was explained, which provided a new argument for immune and serological epidemiology of leptospirosis