| nosocomial dissemination of extended-spectrum ß-lactamase veb-1a-producing providencia stuartii isolates in a tunisian hospital. | a collection of 20 multidrug-resistant providencia stuartii isolates recovered from 2005 to 2009 at the military hospital of tunis, tunisia, was analysed. they all expressed the extended-spectrum ß-lactamase (esbl) veb-1a. the bla (veb-1a) gene was plasmid-located and it was associated with complex genetic structures, including re elements. pulsed-field gel electrophoresis (pfge) revealed a clonal relationship between all of these isolates. this study identified a nosocomial dissemination of an ... | 2011 | 21442357 |