Antibiotic	Gram-positive cocci						Gram-negative bacilli							Gram-negative cocci		Anaerobes			Atypicals
	MRSA	MSSA	Strep	Pneumo	E. faecalis	VRE	E. coli	P. mirabilis	Klebsiella	Pseudomonas	ESCAPPM	H. flu	Acinetobacter	N. gonorrhoeae	N. meningitidis	Oral anaerobes	B. fragilis	C. diff	Mycoplasma	Legionella	Chlamydia
Penicillin GPenicillins			94		99
Nafcillin / OxacillinPenicillins	0	100
Ampicillin / AmoxicillinPenicillins					100	31	57	92	IR	IR	IR
Cefazolin / CephalexinCephalosporins · 1st							74	IR	79	IR	IR
Cefoxitin / CefotetanCephalosporins · 2nd (cephamycin)
CeftriaxoneCephalosporins · 3rd			100				88	98	86	IR	69
CeftazidimeCephalosporins · 3rd							88	96	86	96	72
CefepimeCephalosporins · 4th							89	99	86	95	88
Amoxicillin-clavulanateβ-lactam / β-lactamase inhibitor							79	96	85	IR	IR
Ampicillin-sulbactamβ-lactam / β-lactamase inhibitor							60	94	75	IR	IR
Piperacillin-tazobactamβ-lactam / β-lactamase inhibitor							88	99	83	92	72
ErtapenemCarbapenems							100	100	100	IR	95
Meropenem / ImipenemCarbapenems							100		100	93	100
AztreonamMonobactam							89	99	86	91	74
CiprofloxacinFluoroquinolones	17	95					76	83	81	86	88
LevofloxacinFluoroquinolones					86	33
MoxifloxacinFluoroquinolones	30	95
Gentamicin / Tobramycin / AmikacinAminoglycosides							91	96	95	98	98
ClindamycinLincosamides	77	83	77
AzithromycinMacrolides
DoxycyclineTetracyclines	88	97			44	75	77	IR	79	IR	93
VancomycinGlycopeptides	100	100	100		97	72
TMP-SMX (Bactrim)Folate antagonists	89	99					81	93	83	IR	87
MetronidazoleNitroimidazoles
LinezolidOxazolidinones	100	100			98	89
DaptomycinLipopeptides	100	100			81	100