一例停乳链球菌似马亚种感染致隐匿性肾炎的调查

停乳链球菌似马亚种是C组或G组β-溶血性链球菌,该菌感染的病例多与食用被污染的奶制品或肉制品有关,主要表现为上呼吸道感染症状,容易误诊。2014年6月西安市某幼儿园暴发一起食源性(酸奶)停乳链球菌似马亚种感染引起的急性上呼吸道感染疫情。对所有病例进行随访时发现,首发病例发展为隐匿性肾炎,未及时明确诊断并治疗是首发病例发展为隐匿性肾炎的主要原因。为提高对该菌感染流行病学特征和临床特征的认识,加强防治能力,减少不良后遗症的发生,对该病例的调查和疫情的应对情况进行报告。

A case of latent nephritis infected with Streptococcus dysgalactiae subspecies equisimilis

Streptococcus dysgalactiae subspecies equisimilis (SDSE) belongs to group C or group G β hemolytic Streptococcus, SDSE infection cases are mostly related with the consumption of contaminated dairy or meat products, the major symptom is upper respiratory tract infection, and is easily to be misdiagnosed. In June 2014, an outbreak of acute upper respiratory tract infection due to SDSE occurred in a kindergarten in Xi’an City. All cases were followed up, the initial case developed as latent nephritis, the main cause for the development of latent nephritis was not performing diagnosis and treatment timely. In order to enhance the understanding of the epidemiological and clinical features of SDSE infection, strengthen prevention and control ability, and reduce the occurrence of adverse sequelae, investigation of the case and epidemic situation should be reported. Streptococcus dysgalactiae subspecies equisimilis; latent nephritis; epidemiological survey； foodborne pathogenic bacteria