Phylogenetic diversity of Escherichia coli strains producing NDM-type carbapenemases

Phylogenetic diversity of Escherichia coli strains producing NDM-type carbapenemases.

BACKGROUND The global accumulation of Escherichia coli with CTX-M extended-spectrum β-lactamases partly reflects the dissemination of clonal lineages, notably ST131 and ST405. More recently, E. coli have emerged that produce NDM carbapenemase. We sought to determine the clonal diversity of E. coli with this enzyme from English hospitals, and to compare them with isolates from Pakistan and India...

NDM-1-producing Escherichia coli in Germany.

Phylogenetic analysis of Escherichia coli strains isolated from human samples

Escherichia coli (E. coli) is a normal inhabitant of the gastrointestinal tract of vertebrates, including humans. Phylogenetic analysis has shown that E. coli is composed of four main phylogenetic groups (A, B1, B2 and D). Group A and B1 are generally associated with commensals, whereas group B2 is associated with extra-intestinal pathotypes. Most enteropathogenic isolates, however, are assigne...

Long-term carriage of NDM-1-producing Escherichia coli.

cultures of viable bacteria were performed in excised tissues. When mice were challenged with S. aureus and immediately afterwards treated with saline (control group), mean bacterial numbers were significantly higher than those in cultures from all other groups (

Importance of Escherichia coli strains producing verotoxins.

Correspondence and reprint requests should be addressed to: Prof. Alejandro Cravioto, Deputy Executive Director ICDDR,B: Centre for Health and Population Research GPO Box 128, Dhaka 1000 (Mohakhali, Dhaka 1212) Bangladesh Email: [email protected] The production of a heat-labile protein unrelated to cholera toxin was described in the 1960s in studies of Escherichia coli isolated from animals ...