IMP-1 and a Novel Metallo-β-Lactamase, VIM-6, in Fluorescent Pseudomonads Isolated in Singapore

Abstract

ABSTRACT Four carbapenem-resistant Pseudomonas spp. were isolated from patients in Singapore. One Pseudomonas putida isolate contained a bla IMP-1 identical to that first described in Japan. The sequence of a variant bla IMP-1 in Pseudomonas fluorescens contained four silent mutations compared with the original sequence. The remaining P. putida isolates contained bla VIM-6 , a novel VIM gene variant.