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. 1996 Jun;116(3):257–265. doi: 10.1017/s0950268800052559

Foodborne outbreaks caused by Salmonella in Italy, 1991-4.

G Scuderi 1, M Fantasia 1, E Filetici 1, M P Anastasio 1
PMCID: PMC2271424  PMID: 8666068

Abstract

This report summarizes studies on 1699 foodborne outbreaks, in Italy, reported to the Istituto Superior di Sanità (ISS) (the National Institute of Health of Italy, Rome) during the period 1991-4. The most frequently reported foodborne outbreaks were caused by salmonellae (81%), in particular by Salmonella enteritidis and non-serotyped group D salmonella (34% and 33% of the total salmonella outbreaks, respectively). A vehicle was implicated in 69% of the salmonella outbreaks; eggs were implicated in 77% of the outbreaks for which a vehicle was identified or suspected. Salmonella strains isolated in 54 outbreaks were studied for phenotypic and genotypic characteristics. The isolates belonged to S. enteritidis (50 outbreaks), S. typhimurium (three outbreaks) and S. hadar (one outbreak). In the S. enteritidis outbreaks, phage type 4 was most frequently isolated (64.8%), followed by phage type 1 (14.8%). The virulence plasmid of 38 megadaltons was found in many different phage types of S. enteritidis.

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Selected References

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