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目的通过对一起水源性细菌性痢疾爆发疫情的流行病学调查分析,探讨疫情发生的原因。方法采用现场流行病学调查方法,用专门表格对患者逐一进行调查,采集患者、水源水进行肠道致病菌培养。结果共发病139例,2004年5月28日出现首发病例,6月4日流行结束,整个流行期为8天,罹患率为7.98%,患者以发热、头痛、恶心、呕吐、腹痛、腹泻为主,患者病原检索出志贺氏属福氏群痢疾杆菌。饮用水水质化验,细菌总数(450个/m l),大肠菌群(2380个/L)均超标。结论本起疫情是由饮用水受到污染而引起的细菌性痢疾爆发。
Objective To analyze the epidemiological investigation of an outbreak of water-borne bacillary dysentery and explore the causes of outbreak. Methods By field epidemiological survey method, the patients were investigated by special form one by one, and the patients and water source were collected for pathogenic bacteria culture of the intestine. Results A total of 139 cases of onset, May 28, 2004 the first case occurred, June 4 epidemic over the entire epidemic was 8 days, the attack rate of 7.98%, patients with fever, headache, nausea, vomiting, abdominal pain, diarrhea Lord, the patient pathogen retrieved Shigella flexneri dysentery bacilli. Drinking water quality test, the total number of bacteria (450 / ml), coliform (2380 / L) were exceeded. Conclusion The outbreak was caused by bacterial diarrhea caused by contamination of drinking water.