摘要：In January 2001, a cluster of 24 cases of salmonellosis wasinvestigated by the Communicable Disease Control Branch,Department of Human Services, South Australia. Hypoth-esis generating interviews sought demographic, illness,food purchasing practices, food consumption, social activ-ities, and animal contact information for the 7 day periodprior to the onset of symptoms. Eight (7 female, 1 male, agerange 11 to 40 years) cases reported eating at an Adelaidenoodle restaurant between 17 and 22 December 2000. Thepredominant symptoms were diarrhoea (100%) with37.5 per cent reporting bloody diarrhoea, abdominal pain(87.5%), fever (75%) and nausea (75%). The medianincubation period from eating at the restaurant to illness was4 days (range: 2 to 6 days). Where obtained, the medianduration of symptoms was 9 days (range 6 to 17 days). Fivestool specimens obtained from cases were positive forSalmonella Typhimurium phage type 29 and a further 3 stoolspecimens were positive for Salmonella Typhimuriumphage type untypable. A polymerase chain reaction basedtest showed the relatedness of the untypable isolates withthe phage type 29 isolates. In addition, there were 3 reportsof gastrointestinal illness in restaurant employees. All3 employees reported the onset of gastrointestinal illnessbetween 17 and 18 December 2000. One symptomaticemployee reported working in various food preparation anddelivery roles from 18 to 22 December 2000
