以往对我省钩端螺旋体病临床型与感染钩体血清群（菌群）关系分析中发现：不论强毒或弱毒菌群均可引发黄疸出血、肺出血等重症型病例，但是强毒菌群引发重症型患者的比例显然高于弱毒菌群［１］。现进一步对几个主要流行菌群与临床胃肠型及流感伤寒型的感染发病关系分析结果发 In the past, the clinical analysis of leptospirosis in our province and the infection of leptospiral serogroups (flora) found that: whether virulent or attenuated bacteria can cause jaundice bleeding, pulmonary hemorrhage and other severe cases, but the virulent bacteria group Caused by the proportion of patients with severe type is obviously higher than the weak group of bacteria [1]. Now further analysis of several major epidemic flora and clinical gastrointestinal and influenza typhoid infection incidence analysis