Four strains of Escherichia coli O157:H7 isolated from patients during an outbreak of disease associated with ground beef: importance of evaluating multiple colonies from an outbreak-associated product.

Journal of Clinical Microbiology
Mary E ProctorJeffrey P Davis

Abstract

This report describes the investigation of a ground-beef-associated outbreak that involved five genetically distinct patient strains of Escherichia coli O157:H7. Human and product isolates were evaluated by pulsed-field gel electrophoresis (PFGE) with two endonucleases. The multiple-strain etiology of this outbreak underscores the importance of isolating and evaluating multiple colonies from outbreak-related products and comparing two endonuclease PFGE patterns of all product and human isolates identified during outbreak periods. This investigation emphasizes the importance of interviewing all confirmed and suspected case patients during the outbreak period, regardless of the PFGE pattern of their isolate, to confirm or rule out an epidemiologic link to the outbreak.

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Citations

Apr 11, 2006·Foodborne Pathogens and Disease·Timothy J BarrettBala Swaminathan
Apr 11, 2006·Foodborne Pathogens and Disease·Craig W Hedberg, John M Besser
Dec 2, 2010·Foodborne Pathogens and Disease·Witold A Ferens, Carolyn J Hovde
Jun 6, 2006·Applied and Environmental Microbiology·J O NoyceC W Keevil
Apr 13, 2004·Journal of the American Veterinary Medical Association·John R DunnR Alex Thompson
Oct 27, 2004·Emerging Infectious Diseases·Amita GuptaJohn T Brooks
Nov 16, 2004·Journal of Immunological Methods·Andrew G GehringRichard S Handley
Jul 12, 2011·Journal of Food Protection·M E JacobT G Nagaraja
Sep 16, 2005·Journal of Food Protection·Peter Gerner-SmidtBala Swaminathan

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