一起冬季学校菌痢暴发疫情

A Bacterium Dysentery Outbreak in A School

目的通过调查分析1起腹痛、腹泻、里急后重为主要症状的学校聚集性疫情,了解疫情的流行病学特征,分析查找传染源和传播方式,评估调查处置过程,为预防控制措施提供科学依据并积累疫情处置经验。方法采用流行病学调查分析方法对住校生与通读生,就餐者与非就餐者进行对照分析,采取患者肛拭子进行PCR和细菌学实验室检验。结果共发病39名,学生罹患率14.4%,12月7日至12日发病,发病者均为学校食堂就餐者,住校生罹患率高于通读生,未就餐者未发病,8名患者肛拭子PCR和细菌学检测均为宋内志贺菌阳性,一过性发生无二代病例。结论该校为食堂食品或餐具污染所致的宋内志贺菌暴发疫情;疫情控制措施及时有力;冬季仍需警惕菌痢疫情。

objective By investing and analyzing symptoms of abdominal pain, diarrhea and tenesmus as the main indexes of school gathered epidemic situation, to understand the epidemiological characteristics of bacillary dys-entery. Methods Epidemiological survey on resident students and nonresident students, diners and non - diners was conducted. Samples of anus swab and bacteriology laboratory test were tested. Results The number of students with morbidity was 39, with an attack rate of 14. 4%. The attacked students were all for the school dining room repast. The attack rate of resident students was higher than that of nonresident students; students who did not repast at school were without this disease. The 8 students tested with anus swab were all with Shi-gella sonnei, without a second generation case. Conclusion The school canteen food or utensils contaminant caused by the Shigella sonnei bacteria. The control measures were timely and forceful. Winter still needs to be vigilant for bacterium dysentery epidemic.