目的调查大连市首例人感染猪链球菌病的感染来源和流行特征,为疾病防制提供科学依据。方法用描述流行病学方法对病例进行流行病学调查。结果大连市发现首例人感染猪链球菌病确诊病例,临床症状主要有发热,腰痛,伴意识障碍,间断腹泻等,体征有克布氏征阳性,患者脑脊液检测结果为猪链球菌Ⅱ型。患者发病前无明显的流行病学接触史。结论该病例为大连市首例人感染猪链球菌病(Ⅱ型),感染来源不清。应加强健康教育和培训工作,提高市民防护能力和医务人员的诊治水平。 Objective To investigate the source and epidemic characteristics of the first human infection of swine streptococcosis in Dalian and to provide a scientific basis for disease prevention. Methods Descriptive epidemiological methods were used to conduct epidemiological investigation of cases. Results The first case of human infection with Streptococcus suis was found in Dalian City. The main clinical symptoms were fever, low back pain, disturbance of consciousness, intermittent diarrhea and so on. The signs of Crohn’s disease were positive, and the cerebrospinal fluid was detected as Streptococcus suis type Ⅱ. Before the onset of the patient had no obvious history of epidemiological exposure. Conclusions This case was the first person infected with Streptococcus suis (type Ⅱ) in Dalian. The source of infection was unclear. Health education and training should be strengthened in order to raise the citizens’ protection capability and medical staff’s diagnosis and treatment.