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Table 1 Number and proportion of ESBL-producing and carbapenemase-producing Enterobacteriaceae included in the study according to species

From: Development of an algorithm for phenotypic screening of carbapenemase-producing Enterobacteriaceae in the routine laboratory

Species Number (%) of isolates
Total ESBL+ Carbapenemase positive
Total OXA-48 KPC MBL
Klebsiella pneumoniae 121 91 (75.2) 33 (27.3) 24 7 2
Enterobacter cloacae 89 32 (36.0) 0    
Enterobacter aerogenes 46 20 (43.5) 0    
Escherichia coli 42 24 (57.1) 10 (23.8) 9   1
Citrobacter freundii 18 7 (38.9) 2 (11.1) 1 1  
Serratia marcescens 10 0 2 (20.0) 2   
Klebsiella oxytoca 5 0 2 (40.0) 2   
Proteus mirabilis 1 1 (100) 1 (100)    1
Salmonella spp 1 1 (100) 1 (100)    1
Others 16 3 (18.8) 1 (6.3) 1   
Total 349 179 (51.3) 52 (14.9) 39 8 5
  1. ESBL+ extended-spectrum β-lactamase production, OXA-48 OXA-48 group carbapenemase, MBL metallo-beta-lactamase