Document Detail

Salmonella, Shigella and growth potential of other food-borne pathogens in Ethiopian street vended foods.
MedLine Citation:
PMID:  12219962     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: To evaluate the bacteriological safety of food items sold by street vendors with regard to Salmonella and Shigella and to assess the growth potential of some foodborne pathogens in some street foods.
DESIGN: Collection of street-vended foods and laboratory based microbiological analysis.
SETTING: Microbiology Laboratory, Department of Biology, Addis Ababa University, Addis Ababa, Ethiopia.
RESULTS: Most of the street food samples had aerobic mesophilic counts >10(7) cfu/g. Nine "kitfo" and one "egg sandwich" samples yielded Salmonella. Shigella was isolated from three "macaroni" samples. The Salmonella isolates were sensitive to all ten drugs tested but the Shigella isolates had multiple resistance against five drugs. In a challenge study, Salmonella typhimurium, Shigella flexneri and Staphylococcus aureus grew in street-vended food samples to hazardous levels within eight to twelve hours.
CONCLUSION: Street foods are heavily contaminated with micro-organisms and are potential sources of food borne infections. Health hazards from street foods may be significantly minimised by consumption within four hours of preparation.
D Muleta; M Ashenafi
Publication Detail:
Type:  Evaluation Studies; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  East African medical journal     Volume:  78     ISSN:  0012-835X     ISO Abbreviation:  East Afr Med J     Publication Date:  2001 Nov 
Date Detail:
Created Date:  2002-09-10     Completed Date:  2002-10-24     Revised Date:  2014-07-28    
Medline Journal Info:
Nlm Unique ID:  0372766     Medline TA:  East Afr Med J     Country:  Kenya    
Other Details:
Languages:  eng     Pagination:  576-80     Citation Subset:  IM    
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MeSH Terms
Colony Count, Microbial
Consumer Product Safety
Food Handling
Food Microbiology*
Lens Plant / microbiology
Salmonella / isolation & purification*
Shigella flexneri / isolation & purification*
Staphylococcus aureus / isolation & purification*

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