Table 1.

Characteristics of IMP-8 carrying Citrobacter freundii isolates from rectal swabs of three hospitalized patients in Germany^a

Patient	Source	Isolation date	Etest results: MIC for the antimicrobial agents in mg/L and interpretation
			TZP	CXM	CTX	CAZ	FEP	ATM	ERT	MEM	TIG	CIP	AN	COL
1	Rectal swab	March 2012	128 R	>256 R	16 R	>256 R	16 R	2 I	>32 R	8 I	0.75 S	8 R	2 S	0.75 S
2	Rectal swab	June 2012	96 R	>256 R	16 R	>256 R	24 R	3 I	>32 R	>32 R	0.75 S	16 R	2 S	1 S
3	Rectal swab	March 2013	>256 R	>256 R	24 R	>256 R	24 R	2 I	>32 R	>32 R	0.75 S	12 R	2 S	1 S

I, intermediate; R, resistant; S, susceptible; AN, amikacin; ATM, aztreonam; CAZ, ceftazidime; CIP, ciprofloxacin; COL, colistin; CTX, cefotaxime; CXM, cefuroxime; ERT, ertapenem; MEM, meropenem; TIG, tigecycline; TZP, piperacillin-tazobactam.

^aInterpretation according to the EUCAST clinical breakpoints (http://www.eucast.org/fileadmin/src/media/PDFs/EUCAST_files/Breakpoint_tables/Breakpoint_table_v_3.1.pdf).