Norton Sophie, Huhtinen Essi, Conaty Stephen, Hope Kirsty, Campbell Brett, Tegel Marianne, Boyd Rowena, Cullen Beth
Public Health Unit, Sydney South West Area Health Service, Sydney, Australia .
Western Pac Surveill Response J. 2012 Jun 21;3(2):16-23. doi: 10.5365/WPSAR.2012.3.1.001. Print 2012 Apr.
In January 2011, Sydney South West Public Health Unit was notified of a large number of people presenting with gastroenteritis over two days at a local hospital emergency department (ED).
Case-finding was conducted through hospital EDs and general practitioners, which resulted in the notification of 154 possible cases, from which 83 outbreak cases were identified. Fifty-eight cases were interviewed about demographics, symptom profile and food histories. Stool samples were collected and submitted for analysis. An inspection was conducted at a Vietnamese bakery and food samples were collected and submitted for analysis. Further case ascertainment occurred to ensure control measures were successful.
Of the 58 interviewed cases, the symptom profile included diarrhoea (100%), fever (79.3%) and vomiting (89.7%). Salmonella Typhimurium multiple-locus-variable number tandem repeats analysis (MLVA) type 3-10-8-9-523 was identified in 95.9% (47/49) of stool samples. Cases reported consuming chicken, pork or salad rolls from a single Vietnamese bakery. Environmental swabs detected widespread contamination with Salmonella at the premises.
This was a large point-source outbreak associated with the consumption of Vietnamese-style pork, chicken and salad rolls. These foods have been responsible for significant outbreaks in the past. The typical ingredients of raw egg butter or mayonnaise and pate are often implicated, as are the food-handling practices in food outlets. This indicates the need for education in better food-handling practices, including the benefits of using safer products. Ongoing surveillance will monitor the success of new food regulations introduced in New South Wales during 2011 for improving food-handling practices and reducing foodborne illness.
2011年1月，悉尼西南公共卫生部门接到通知，当地一家医院急诊科在两天内有大量肠胃炎患者前来就诊。
通过医院急诊科和全科医生进行病例排查，共收到154例可能病例的报告，从中确定了83例暴发病例。对58例病例进行了人口统计学、症状特征和饮食史方面的访谈。采集粪便样本并送检分析。对一家越南面包店进行了检查，并采集食品样本送检分析。进一步进行病例排查以确保控制措施取得成功。
在接受访谈的58例病例中，症状特征包括腹泻（100%）、发热（79.3%）和呕吐（89.7%）。在95.9%（47/49）的粪便样本中检测到鼠伤寒沙门氏菌多位点可变数目串联重复序列分析（MLVA）3-10-8-9-523型。病例报告称食用了同一家越南面包店的鸡肉、猪肉或沙拉卷。环境拭子检测到该场所被沙门氏菌广泛污染。
这是一起与食用越南风味猪肉、鸡肉和沙拉卷相关的大型点源暴发。这些食品过去曾导致重大疫情暴发。生鸡蛋黄油或蛋黄酱以及肉酱等典型原料经常被牵连，食品店的食品处理方式也难辞其咎。这表明需要开展更好食品处理方式的教育，包括使用更安全产品的益处。持续监测将评估2011年新南威尔士州出台的新食品法规在改善食品处理方式和减少食源性疾病方面的成效。
