ESBL prevalence (A) and clonal relatedness (B) in Enterobacter blood culture isolates (n = 271) per participating center. (A) Numbers on top of bars in panel A indicate the number of ESBL-positive Enterobacter isolates/total number of Enterobacter blood culture isolates per participating center (*). (B) Center 1, genotype 104 (n = 2); center 2, genotype 110 (n = 4); center 3, genotype 85 (n = 5); center 4, genotype 104 (n = 2) and genotype 54 (n = 2); center 6, genotype 85 (n = 3) (**). Clonal relatedness implicates >98% similarity in DiversiLab typing (9).