An outbreak of cephalosporin-resistant Klebsiella pneumoniae occurred in a neonatal intensive care unit in São Paulo, Brazil. Of the 10 pulsotypes identified during the outbreak and follow-up periods, nine produced CTX-M-2 or its new variant CTX-M-59 and one produced SHV-5. blaCTX-M-2/59 were located on closely related plasmids that were transferable.

de Oliveira Garcia D, Doi Y, Szabo D, Adams-Haduch JM, Vaz TM, Leite D, Padoveze MC, Freire MP, Silveira FP, Paterson DL.

Instituto Adolfo Lutz, São Paulo, Brazil; Division of Infectious Diseases, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania; Institute of Medical Microbiology, Semmelweis University, Budapest, Hungary; Centro de Controle de Doencas, Divisão de Infecção Hospitalar, São Paulo, Brazil; University of Queensland, Brisbane, Australia; Queensland Health Pathology Services, Royal Brisbane and Women’s Hospital, Brisbane, Australia.