Fig. 1

Frequency of extended-spectrum β-lactamase-producing Enterobacteriaceae (ESBL-E) isolation in our unit. The incidence of ESBL-E isolation in the microbiological laboratory in our institute was determined. Klebsiella pneumoniae is indicated by the gray bar, and Escherichia coli is denoted by the shadow bar. Only the first microbe isolated from each sample was counted, but the isolation of different specimens in different samples from the same individual was permitted