Activity of Ceftaroline against Aerobic Gram-Positive and Gram-Negative Pathogens: Effect of Test Method Variability

Table 1

List of organisms used in the study.

Organism	RMA number	Specimen source	Date isolated	Comments
E. coli		ATCC 25922
	19089	Blood	3/7/2007	Ampicillin = 4 μg/mL
	19090	Primary infection site	3/28/2007	Ampicillin ≥32 μg/mL
K. pneumoniae	19091	Primary infection site	3/1/2007	Ampicillin = 32 μg/mL
	19092	Blood	6/6/2007	Ampicillin = 16 μg/mL
	19093	Blood	6/29/2007	Ampicillin = 32 μg/mL
H. influenzae		ATCC 49247
	16081	Respiratory	12/31/2003	β-Lactamase-negative
	18520	Respiratory-sinus	12/23/2005	β-Lactamase-positive
M. catarrhalis	11940	Respiratory-sinus	6/14/2000
	14032	Respiratory-sinus	5/22/2002
	18861	Respiratory-sputum	1/31/2007
S. aureus		ATCC 29213
	18488	Chest infection site	2/11/2005	Methicillin-S
	18401	Blood	8/16/2005	Methicillin-S
	18483	Head abscess	10/15/2005	Methicillin-R
	18504	Primary infection site	11/18/2005	Methicillin-R
	18526	Blood	10/24/2005	Methicillin-R
E. faecalis		ATCC 29212
	18284	Foot infection site	3/24/2005
	18877	Blood	4/10/2007
S. pyogenes	17018	Diabetic foot infection site	1/22/2003
	17019	Diabetic foot infection site	10/22/2002
	19047	Abdominal lesion	10/26/2007	Clindamycin-R
S. pneumoniae		ATCC 49619
	19094	Ear	10/29/2007	Penicillin-S
	19095	Eye	1/9/2007	Penicillin-S
	13345	Nasopharynx	11/14/2001	Penicillin = 8 μg/mL
	13385	Nasopharynx	12/4/2001	Penicillin = 8 μg/mL
	18876	Eye	1/2/2007	Penicillin = 8 μg/mL

RMA: R.M. Alden (culture collection).
ATCC: American Type Culture Collection.