Document Detail

A statewide outbreak of Salmonella bovismorbificans phage type 32 infection in Queensland.
MedLine Citation:
PMID:  12549525     Owner:  NLM     Status:  MEDLINE    
Between 30 May and 1 June 2001, 10 cases of Salmonella Bovismorbificans infection were reported to Public Health Services, Queensland Health. Investigations included enhanced surveillance, case interviews, a matched case control study, environmental audit and microbiological testing of faecal isolates (phage typing) and implicated food products. Forty-one cases of S. Bovismorbificans infection were detected, 36 cases were phage type 32. A matched case control study identified that illness was associated with consumption of food from 15 outlets of a fast food chain, Company A (matched odds ratio [MOR] 17.5, 95% CI 2.0-657.3, p = 0.004) and consumption of a particular product, Product X (MOR undefined, p < 0.001) in the week before onset of illness. Manufacturers of Product X ingredients were audited. Deficiencies were identified in equipment cleansing at the salad mixture processing plant (Manufacturer M). A swab of food residue behind the cutting wheel rim of the lettuce shredder was positive for S. Bovismorbificans phage type 32. This appears to be the first reported Australian outbreak of salmonellosis associated with a lettuce product. The investigations suggest that inadequate maintenance of cutting equipment to prepare lettuce ingredients for Product X by Manufacturer M was a key factor in this statewide outbreak. The statewide nature of this outbreak demonstrates the role of timely serovar identification of Salmonella isolates by a reference laboratory as an aid to outbreak identification, and the importance of adherence to appropriate food safety procedures in the manufacture and preparation of mass produced food items for the public.
Russell J Stafford; Bradley J McCall; Annette S Neill; Dallas S Leon; Gregory J Dorricott; Christopher D Towner; Gino R Micalizzi
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Communicable diseases intelligence quarterly report     Volume:  26     ISSN:  1447-4514     ISO Abbreviation:  Commun Dis Intell Q Rep     Publication Date:  2002  
Date Detail:
Created Date:  2003-01-28     Completed Date:  2003-02-21     Revised Date:  2013-10-29    
Medline Journal Info:
Nlm Unique ID:  101601804     Medline TA:  Commun Dis Intell Q Rep     Country:  Australia    
Other Details:
Languages:  eng     Pagination:  568-73     Citation Subset:  IM    
OzFoodNet and Communicable Diseases Unit, Queensland Health, Brisbane, Queensland.
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MeSH Terms
Age Distribution
Bacteriophage Typing
Case-Control Studies
Child, Preschool
Confidence Intervals
Disease Outbreaks*
Health Surveys
Infection Control / organization & administration
Middle Aged
Queensland / epidemiology
Reference Values
Risk Factors
Salmonella Food Poisoning / epidemiology*,  etiology*
Salmonella Phages / classification*,  isolation & purification
Salmonella enterica / isolation & purification
Sex Distribution

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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