Document Detail

Outbreak of Escherichia coli O157:H7 infections associated with nonintact blade-tenderized frozen steaks sold by door-to-door vendors.
MedLine Citation:
PMID:  15954707     Owner:  NLM     Status:  MEDLINE    
Steaks have not been recognized as an important vehicle of Escherichia coli O157:H7 infection. During 11 to 27 June 2003, the Minnesota Department of Health (MDH) identified four O157 infection cases with the same pulsed-field gel electrophoresis (PFGE) subtype. All four case patients consumed brand A vacuum packed frozen steaks sold by door-to-door vendors. The steaks were blade tenderized and injected with marinade (i.e., nonintact). Information from single case patients in Michigan and Kansas identified through PulseNet confirmed the outbreak. The MDH issued a press release on 27 June to warn consumers, prompting a nationwide recall of 739,000 lb (335,506 kg) of frozen beef products. The outbreak resulted in six culture-confirmed cases (including one with hemolytic uremic syndrome) and two probable cases in Minnesota and single confirmed cases in four other states. The outbreak PFGE subtype of O157 was isolated from unopened brand A bacon-wrapped fillets from five affected Minnesota households. A fillet from one affected household was partially cooked in the laboratory, and the same O157 subtype was isolated from the uncooked interior. The tenderizing and injection processes likely transferred O157 from the surface to the interior of the steaks. These processing methods create new challenges for prevention of O157 infection. Food regulatory officials should reevaluate safety issues presented by nonintact steak products, such as microbiologic hazards of processing methods, possible labeling to distinguish intact from nonintact steaks, and education of the public and commercial food establishments on the increased risk associated with undercooked nonintact steaks. Information on single cases of O157 infection in individual states identified through PulseNet can be critical in solving multistate outbreaks in a timely manner.
Ellen Swanson Laine; Joni M Scheftel; David J Boxrud; Kevin J Vought; Richard N Danila; Kevin M Elfering; Kirk E Smith
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Journal of food protection     Volume:  68     ISSN:  0362-028X     ISO Abbreviation:  J. Food Prot.     Publication Date:  2005 Jun 
Date Detail:
Created Date:  2005-06-15     Completed Date:  2005-07-18     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  7703944     Medline TA:  J Food Prot     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1198-202     Citation Subset:  IM    
Acute Disease Investigation and Control Section, Minnesota Department of Health, P.O. Box 9441, Minneapolis, Minnesota 55440, USA.
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MeSH Terms
Disease Outbreaks
Escherichia coli Infections / epidemiology*
Escherichia coli O157 / growth & development*
Food Contamination*
Food Handling / methods
Food Microbiology*
Hemolytic-Uremic Syndrome / epidemiology,  microbiology
Meat / microbiology*
Minnesota / epidemiology
Grant Support
U50/CCU511190/CC/CDC HHS

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

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