Following on from the PFGE report of isolates to the end of 2008 (PFGE Typing of Meat
Isolates of E. coli O157:H7 in New Zealand; ESR, March 2009), this report describes the
results of PFGE analysis of an additional 55 E. coli O157:H7 isolates from meat received by ESR to 1 October 2009, and includes nine isolates associated with the
AgResearch/AsureQuality “Investigating E. coli O157:H7 False Positives” project.