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.
ESBL stands for extended spectrum beta (Ã) lactamase. Beta lactamases are. enzymes produced by many species of bacteria which destroy one or more. antibiotics. It is one of the ways in which bacteria develop resistance. ESBLs are. unusual in that as the name suggests they break down an exceptionally wide. variety of antibiotics.