SHC Antibiogram: Anaerobes (Selected Species) 2008

• SHC Antibiogram 2008  (printable PDF)

Percent Susceptible by Etest (a)

	No. Tested	Amp/ sul- bactam	Peni- cillin	Pip/ tazo- bactam	Mero- penem	Clinda- mycin	Metro- nidazole
Bacteroides fragilis	30	97%	0%	93%	97%	77%	97%
Bacteroides NOT fragilis	25	92%	0%	80%	92%	24%	91%
Gram negative rods (other) (b)	31	100%	100%	100%	100%	83%	100%
ALL Gram positive rods	46	100%	80%	100%	100%	80%	74% (c)
Clostridium perfringens only	10	-	100%	-	-	70%	100%
Gram pos rods NOT perfringens	23	100%	74%	100%	100%	74%	87%
Peptostreptococci	20	-	100%	-	-	85% (d)	95%
Cost ($)		$$	$	$$$	$$$	$$	$

(a) Not all isolates tested with every drug.

(b) 13 Fusobacterium spp., 17 Prevotella spp., 1 Bacteroides spp.

(c) Non-sporeforming anaerobic gram positive rods do not respond to metronidazole.

(d) Notify Micro Lab to perform antibiotic susceptibility testing if clindamycin is being considered for a Peptostreptococcus; minimum 48 H for results