[[[ Study objective: ]]] To establish the source of a community outbreak of Salmonella typhimurium definitive type 124. [[[ Design: ]]] Two stage case-control study. [[[ Setting: ]]] Three districts in south east Wales. [[[ Subjects: ]]] Cases of salmonella food poisoning and community controls. [[[ Main results: ]]] An initial case-control study identified an association between illness and eating ham (odds ratio 4.50, 95% confidence intervals 1.10, 21.8) and also found a possible association between illness and food bought from delicatessen stores (odds ratio 5.03, 95% confidence intervals 1.01, 32.3). However, only after a second stage case-control study was a single common ham producer identified as the source (odds ratio 25.0, 95% confidence intervals 2.33, 1155). [[[ Conclusion: ]]] Sequential case-control studies are an important and underused tool in the investigation of community outbreaks.
Use of sequential case-control studies to investigate a community Salmonella outbreak in Wales
웨일스에서의 지역 살모넬라 발병 조사를 위한 순차적 사례-대조 연구의 사용
[Category] 살모넬라증,
[Article Type] journal-article
[Source] pubmed
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