Endoscopic Retrograde Cholangiopancreatography–Associated AmpCEscherichia coliOutbreak

BACKGROUND We identified an outbreak of AmpC–producing Escherichia coli infections resistant to third-generation cephalosporins and carbapenems (CR) among 7 patients who had undergone endoscopic retrograde cholangiopancreatography at hospital A during November 2012–August 2013. Gene sequencing revealed a shared novel mutation in a bla CMY gene and a distinctive fumC/ fimH typing profile. OBJECTIVE To determine the extent and epidemiologic...