Anaerobic Gram-Positive Cocci Clinical Microbiology Review 203
ORGANISM PATHOGENICITY GRAM STAIN OTHER
Finegoldia magna
(formerlyPeptostreptococcus
magnus)
Peptostreptococcus
anaerobius
Peptoniphilus
asaccharolyticus
(formerlyPeptostreptococcus
asaccharolyticus)
Small colonies. May take 48 hr
to grow. Catalase & indole neg.
Resistant to SPS.Small gray-white colonies in
24-48 hr. Sweet odor. Sensitive
to SPS.Yellow colonies. Musty odor.
Resistant to SPS. Indole pos.Normal flora on skin & in mouth,
intestines, female genital tract.
Most commonly isolated & most
pathogenic anaerobic GPC. Associ-
ated with skin infections, decubitus
ulcers, septic arthritis, bone infec-
tion following orthopedic surgery,
oral & female genital tract infec-
tions, bacteremia.Normal on skin & in mouth, GI,
& GU tracts. Mixed infections of
skin, soft tissues, GI tract, female
genital tract, bones, joints, lungs,
brain.Normal on skin & in GI & GU
tracts. Associated with obstetric
& gynecological infections.GPC in singles, pairs, tetrads,
clusters. Resembles staph.Tiny GPC in chains. Resembles
strep.GPC in pairs, short chains,
tetrads, clusters.