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1991年6月17、18日,奥克兰州一所小学在24 h内有3例患儿被检出带有沙门氏菌。随后几天其它孩子中有胃肠疾病续发。大多数患者都参加了6月11日的野餐或6月12日的舞会,或是两个都参加了。 诊断标准:可疑病例是6月11～17日至少发生两种下列症状:腹泻,急性腹痛,发烧,呕吐或头痛。确诊病例是大便培养出沙门氏菌的患者。 调查了51名幼儿园学生(登记在册的56个)、3名教师、2名父母、1名同胞。8名未达到病例界定标准的没纳入分析。本流行病学分析共鉴定21例,调整发病
On June 17 and 18, 1991, three children in a primary school in Oakland were detected with Salmonella within 24 hours. A few days later, other children with gastrointestinal disease continued. Most patients attended a picnic on June 11 or a dance on June 12, or both attended. Diagnostic criteria: Suspected cases are at least two of the following symptoms from June 11 to June 17: diarrhea, acute abdominal pain, fever, vomiting or headache. The confirmed cases were stools to develop salmonella patients. 51 kindergarten students (56 enrolled), 3 teachers, 2 parents and 1 sibling were investigated. Eight patients who did not meet the criteria defined by the case were not included in the analysis. The epidemiological analysis of 21 cases were identified to adjust the incidence