Trimethoprim

General

Group	Organism	Sensitivity
Gram Positive	Strep. Group A, B, C, G	S
	Strep. Pneumoniae	I
	Viridans strep	X1
	Strep. anginosus gp	X1
	Enterococcus faecalis	S
	Enterococcus faecium	R
	MSSA	I
	MRSA	I
	CA-MRSA	S
	Staph. Epidermidis	S
	C. jeikeium	R
	L. monocytogenes	S
Gram Negatives	N. gonorrhoeae	R
	N. meningitidis	I
	Moraxella catarrhalis	X1
	H. influenzae	I
	E. coli	S
	Klebsiella sp	I
	E. coli/Klebsiella ESBL+	I
	E coli/Klebsiella KPC+	R
	Enterobacter sp, AmpC neg	I
	Enterobacter sp, AmpC pos	I
	Serratia sp	X1
	Serratia marcescens	R
	Salmonella sp	I
	Shigella sp	I
	Proteus mirabilis	X1
	Proteus vulgaris	R
	Providencia sp.	X1
	Morganella sp.	X1
	Citrobacter freundii	X1
	Citrobacter diversus	X1
	Citrobacter sp.	X1
	Aeromonas sp	X1
	Acinetobacter sp.	R
	Pseudomonas aeruginosa	R
	Burkholderia cepacia	S
	Stenotrophomonas maltophilia	R
	Yersinia enterocolitica	X1
	Francisella tularensis	X1
	Brucella sp.	X2
	Legionella sp.	S
	Pasteurella multocida	X1
	Haemophilus ducreyi	R
	Vibrio vulnificus	X1
Misc	Chlamydophila sp	R
	Mycoplasm pneumoniae	X1
	Rickettsia sp	X1
	Mycobacterium avium	X1
Anaerobes	Actinomyces	X1
	Bacteroides fragilis	X2
	Prevotella melaninogenica	X1
	Clostridium difficile	X1
	Clostridium (not difficile)	X1
	Fusobacterium necrophorum	X1
	Peptostreptococcus sp.	X1

S susceptible/sensitive (usually)
I intermediate (variably susceptible/resistant)
R resistant (or not effective clinically)
S+ synergistic with cell wall antibiotics
U sensitive for UTI only (non systemic infection)
X1 no data
X2 active in vitro, but not used clinically
X3 active in vitro, but not clinically effective for Group A strep pharyngitis or infections due to E. faecalis
X4 active in vitro, but not clinically effective for strep pneumonia

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