Document Detail

Salmonellosis outbreak due to chicken contact leading to a foodborne outbreak associated with infected delicatessen workers.
MedLine Citation:
PMID:  20470192     Owner:  NLM     Status:  MEDLINE    
Salmonella is the most common bacterial cause of foodborne outbreaks in the United States. Starting in June 2007, investigation of a cluster of Salmonella Montevideo cases with indistinguishable pulsed-field gel electrophoresis (PFGE) patterns resulted in the identification of an outbreak associated with contact with chickens purchased from a single hatchery. Nine Minnesota cases from May through August 2007 were part of this outbreak. Cases with the outbreak PFGE pattern of Salmonella Montevideo continued to occur in Minnesota after August, but none of these cases reported chicken contact. The majority of these cases resided in the same town in rural Minnesota. Routine interviews revealed that all cases from these counties purchased groceries from the same local grocery store, with two specifically reporting consuming items from the grocery store delicatessen in the week before illness. As a result, an investigation into the delicatessen was initiated. Illness histories and stool samples were collected from all delicatessen employees, and food and environmental samples were collected. None of the employees reported experiencing recent gastrointestinal symptoms, but the outbreak PFGE subtype of Salmonella Montevideo was identified from stool from two food workers. Food and environmental samples collected tested negative for Salmonella. One of the positive employees reported having chickens at home, but the animals did not test positive for Salmonella. The positive food workers were excluded from work until they had two consecutive negative stool cultures for Salmonella. There was no evidence of ongoing transmission thereafter. This was an outbreak of Salmonella Montevideo infections that began as an animal-contact-associated outbreak which subsequently resulted in a foodborne outbreak associated with infected food workers. These outbreaks illustrate the complex epidemiology of salmonellosis.
Erin Hedican; Ben Miller; Brian Ziemer; Pam LeMaster; Selina Jawahir; Fe Leano; Kirk Smith
Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Foodborne pathogens and disease     Volume:  7     ISSN:  1556-7125     ISO Abbreviation:  Foodborne Pathog. Dis.     Publication Date:  2010 Aug 
Date Detail:
Created Date:  2010-07-28     Completed Date:  2010-11-23     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101120121     Medline TA:  Foodborne Pathog Dis     Country:  United States    
Other Details:
Languages:  eng     Pagination:  995-7     Citation Subset:  IM    
Acute Disease Investigation and Control Section, Minnesota Department of Health, St. Paul, Minnesota 55164-0975, USA.
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MeSH Terms
Chickens / microbiology*
Communicable Disease Control
Contact Tracing
Disease Outbreaks*
Electrophoresis, Gel, Pulsed-Field
Food Handling
Food Microbiology
Food Services*
Foodborne Diseases / epidemiology,  microbiology,  prevention & control
Meat / microbiology
Middle Aged
Minnesota / epidemiology
Occupational Diseases / epidemiology*,  microbiology,  prevention & control
Population Surveillance
Salmonella Food Poisoning / epidemiology,  microbiology,  prevention & control,  transmission
Salmonella Infections / epidemiology*,  microbiology,  prevention & control,  transmission
Salmonella enterica / classification,  isolation & purification*
Young Adult
Grant Support
U50/CCU511190//PHS HHS

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