Household Transmission of Carbapenemase-producing Klebsiella pneumoniae.

Carbapenemase-producing K. pneumoniae is a recent addition to the pool of multidrug-resistant nosocomial pathogens. Until now, the strain has been recovered only from hospitalized patients with a longer hospital stay, those given multiple antimicrobial drug courses, and those mechanically ventilated. The strain can colonize the urinary, intestinal, and respiratory tracts, as well as wounds. Hand carriage is probably the biggest factor in transmission of extended-spectrum ?-lactamase producers. Environmental contamination plays a limited role in transmission. Caregivers should be aware that multidrug-resistant organisms of nosocomial origin can be transmitted in the community. Acquisition of such strains is probably of negligible importance in an otherwise healthy person. However, consequences may be different if the recipient of the strain is a debilitated patient. Emerg Infect Dis; May 2008.