The percentage of Carbapenem resistance Strains Antibiotics E coli (n=115) K pneumoniae (n=50) p * n% n% ETP Susceptible 112 97.4 37 74.0 0.001 Intermediate 2 1.7 0 0.0 Resistant 1 0.9 13 26.0 IPM Susceptible 115 100 37 74.0 0.001 Intermediate 0 0.0 1 2.0 Resistant 0 0.0 12 24.0 MEM Susceptible 115 100 37 74.0 0.001 Intermediate 0 0.0 0 0.0 Resistant 0 0.0 13 26.0 Note: (*) comparison susceptible strains between E coli and K pneumoniae.