Medical Definition of configuration. 1  1a: relative arrangement of parts or elementsb: the stable structural makeup of a chemical compound especially with reference to the space relations of the constituent atoms. 2  2: gestalt personality configuration.
Infections with multi-drug resistant E. coli, which is also known as ESBL (extended spectrum beta-lactamase), have been assumed to be a hospital phenomenon.
Most of the cases were due to the ST131 strain of E. coli, which emerged only a few decades ago and became a dominant strain. Over the decades, the organism has acquired additional resistance factors. ESBL E. coli has even had a rapid emergence in the Netherlands, a country where antibiotics are strictly regulated. In a recent study, 8.5% of 1,713 Amsterdam residents had ESBL E. coli in their stool samples.