TABLE 1.

Test strains and β-lactamases

Strain	Designation	β-Lactamase(s)	Reference
K. pneumoniae	3689	TEM-3	19
E. coli	J53 pUD16	TEM-4	32
K. pneumoniae	CF504	TEM-5	33
E. coli	J53 pIF100	TEM-7	13
K. pneumoniae	2633E	TEM-9	41
E. coli	14714	TEM-10	17
K. pneumoniae	G11	TEM-11	43
K. pneumoniae	5934	TEM-12	39
E. coli	MCV36	TEM-12	Unpublished
E. coli	J53 pMG274	TEM-15	29
K. pneumoniae	CF1304	TEM-16	10
E. coli	UAB5	TEM-19	Unpublished
E. coli	TEM-20	TEM-20	5
E. coli	TEM-21	TEM-21	5
K. pneumoniae	CF1104	TEM-24	10
E. coli	CF1609	TEM-25	35
K. pneumoniae	5657	TEM-26	39
K. pneumoniae	LIJ64974	TEM-26	Unpublished
E. coli	J53 pMG276	TEM-52	29
K. pneumoniae	G19	TEM-61	43
K. pneumoniae	3635	TEM-71	36
K. pneumoniae	K28	TEM-88	29
K. pneumoniae	NEDH-1	SHV-2	24
E. coli	J53 pUD18	SHV-3	27
E. coli	J53 pUD21	SHV-4	9
K. pneumoniae	147460	SHV-5	Unpublished
K. pneumoniae	WCMC12	SHV-5	Unpublished
K. pneumoniae	Mary12	SHV-5	Unpublished
K. pneumoniae	JD227	SHV-5	Unpublished
E. coli	J53 pSLH47	SHV-6	3
K. pneumoniae	WCMC9	SHV-7	Unpublished
K. pneumoniae	48188	SHV-12	Unpublished
K. pneumoniae	49760	SHV-12	Unpublished
K. pneumoniae	MCV41a	SHV-18	37
E. coli	GC4209	CTX-M-5	8
E. coli	J53 p4-3	CTX-M-9	44
E. coli	J53 pMG267	CTX-M-14	28
K. pneumoniae	India17	CTX-M-15	20
E. coli	4202	CTX-M-15	Unpublished
K. pneumoniae	SLK54	ACC-1	26
K. pneumoniae	BL18	ACT-1	1
E. coli	UMMC29	CMY-2	1
K. pneumoniae	UCLA14	DHA-1	1
K. pneumoniae	BA32	FOX-1	12
E. coli	J53 p1734	FOX-3	23
E. coli	GCE	FOX-4	7
K. pneumoniae	UAB1	FOX-5	1
E. coli	XL1Blue pHP15	LAT-1	42
K. pneumoniae	96D	MIR-1	30
E. coli	J53 pRMOX1	MOX-1	15
E. coli	J53 pKOL	MOX-2	38
K. pneumoniae	6206b	KPC-3	Unpublished
E. coli	DH10B pNOR-2001	VIM-2	34
K. pneumoniae	77845	ACT-1 and TEM-10	Unpublished
K. pneumoniae	JD225	FOX-5 and SHV-5	Unpublished

^aIdentical in source and phenotype to ATCC 700603, a reference strain for ESBL testing.

^bIsolated at New York University Medical Center in 2003.