The spread of Klebsiella pneumoniae carbapenemase-producing K. pneumoniae to upstate New York

Klebsiella pneumoniae carbapenemases (KPCs) have previously been identified in distinct geographic locations. We report the spread of KPC-2 to upstate New York. Our intention is to alert clinicians to problems encountered in identifying KPC-containing isolates. Possible errors as a result of inferring susceptibility of untested carbapenems from the routine antibiogram using agar-based methodology or micro-dilution testing are discussed.