Abstract：
:A biphasic outbreak of gastroenteritis caused by Salmonella hadar affected canteen employees and workers at a construction site in central Italy in September 1994. There were 448 symptomatic cases, from 61 of whom group C Salmonella was isolated. Six cases were canteen employees. Twenty-two other individuals were asymptomatic excreters. There were 10 secondary cases. Working as a food handler at the canteen constituted an increased risk of infection, independently of ingestion of the food (odds ratio: 62.1; 95% confidence interval (CI): 9.5-406.6). Having eaten at the canteen on the 19th and 20th September was identified as risk factor for subjects symptomatic within 72 hours (relative risk (RR): 17.0, 95% CI: 2.3-124.3), and cooled meat salad was identified as the vehicle of infection (RR: 36.6, 95% CI: 14.3-93.8). The use of portable toilets was another possible route of transmission of infection for all cases (RR: 1.3, 95% CI: 1.0-1.6). The index case was a cook who had symptoms five days before the peak of the outbreak. From 27 individuals both symptomatic and asymptomatic excreters group B, group D and not-typed Salmonellas were isolated. This study underlines the problem of improper food handling in salmonellosis outbreaks and emphasizes the role of several vehicles in the transmission of salmonellosis in a community.
journal_name
Eur J Epidemioljournal_title
European journal of epidemiologyauthors
Faustini A,Sangalli M,Fantasia M,Manganello R,Mattaccini E,Trippanera R,Spera D,La Rosa U,Topi MT,Forastiere F,Perucci CAdoi
10.1023/a:1007411223694subject
Has Abstractpub_date
1998-01-01 00:00:00pages
99-106issue
1eissn
0393-2990issn
1573-7284journal_volume
14pub_type
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journal_title：European journal of epidemiology
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