 clean clothes or dirty clothes outbreak investigation of carbapenem resistant acinetobacter baumannii related to laundry contamination through multilocus sequence typing mlst this article describes an outbreak of carbapenem resistant acinetobacter baumannii cra in a general hospital due to contamination of a laundry evaporative cooler and the laundry environment using multilocus sequence typing mlst mlst confirmed that contamination of the laundry evaporative cooler and surrounding environment caused a polyclonal cra hospital outbreak 