Table 1.

Minimum Inhibitory Concentration (MICs) of Various Antibiotics Against New Delhi Metallo-β-Lactamase (NDM)-1–Producing Klebsiella pneumoniae, by Media

Antibiotic	MIC, mg/L
	CA-MHBa	5% LB–RPMIb
Avibactam	128	64
Ceftazidime	>64	>64
Ceftazidime-avibactam (Avycaz)	64	64
Meropenem	128	512
Meropenem-vaborbactam (Vabomere)	32	256
Tazobactam	>64	>64
Ceftolozane-tazobactam	>64	>64
Aztreonam	512	32
LL-37	64	64

K. pneumoniae clinical isolate CDC 1100192, obtained from a sputum specimen, was used in this study.

^aCation-adjusted Müller-Hinton broth (CA-MHB).

^b5% Luria broth in Roswell Park Memorial Institute (RPMI) 1640 tissue culture medium.