Clinical Microbiology Species and Characteristics

Enterococcus spp.

Gram positive cocci, catalase negative, aerobic, group D

Finegoldia magna

Gram positive cocci, anaerobic

Peptostreptococcus spp.

Gram positive cocci, anaerobic

Staphylococcus aureus

Gram positive cocci, catalase positive, aerobic, coagulase positive

Staphylococcus epidermidis

Gram positive cocci, catalase positive, aerobic, coagulase negative

Staphylococcus saprophyticus

Gram positive cocci, catalase positive, aerobic, coagulase negative

Streptococcus pyogenes

Gram positive cocci, catalase negative, aerobic, beta, group A

Streptococcus agalactiae

Gram positive cocci, catalase negative, aerobic, beta, group B

Streptococcus pneumoniae

Gram positive cocci, catalase negative, aerobic, alpha

Streptococcus gallolyticus

Gram positive cocci, catalase negative, aerobic, alpha, group D

viridans Streptococcus spp.

Gram positive cocci, catalase negative, aerobic, alpha

Actinomyces

Gram positive bacilli, no spores, anaerobic, beaded, branching

B. anthracis

Gram positive bacilli, spores, aerobic

B. cereus

Gram positive bacilli, spores, aerobic

C. difficile

Gram positive bacilli, spores, anaerobic

C. botulinum

Gram positive bacilli, spores, anaerobic

C. perfringens

Gram positive bacilli, spores, anaerobic

C. tetani

Gram positive bacilli, spores, anaerobic

Corynebacterium spp.

Gram positive bacilli, no spores, aerobic, diphtheroid

Cutibacterium acnes

Gram positive bacilli, no spores, anaerobic

Listeria monocytogenes

Gram positive bacilli, no spores, aerobic

Gardnerella vaginalis

Gram positive bacilli, no spores, aerobic

Nocardia spp.

Gram positive bacilli, no spores, aerobic, beaded, branching, partially acid fast

Neisseria meningitidis

Gram negative diplococci (bean shaped)

Citrobacter

Gram negative Enterobacter rod

Enterobacter

Gram negative Enterobacter rod

Escherichia

Gram negative Enterobacter rod

Klebsiella

Gram negative Enterobacter rod

Proteus

Gram negative Enterobacter rod

Salmonella

Gram negative Enterobacter rod

Serratia

Gram negative Enterobacter rod

Shigella

Gram negative Enterobacter rod

Yersinia

Gram negative Enterobacter rod

Campylobacter

Curved Gram negative rod

Helicobacter

Curved Gram negative rod

Vibrio

Curved Gram negative rod

Acinetobacter

Non-fermenting Gram negative rod

Burkholderia

Non-fermenting Gram negative rod

Pseudomonas

Non-fermenting Gram negative rod

Stenotrophomonas

Non-fermenting Gram negative rod

Bordetella

Fastidious Gram negative rod

Brucella

Fastidious Gram negative rod

Francisella

Fastidious Gram negative rod

Haemophilus

Fastidious Gram negative rod

Legionella

Fastidious Gram negative rod

Pasteurella

Fastidious Gram negative rod

Bacteroides

Anaerobic Gram negative rod

Fusobacterium

Anaerobic Gram negative rod

Prevotella

Anaerobic Gram negative rod

Porphyromonas

Anaerobic Gram negative rod

Chlamydia

Intracellular

Rickettsia

Intracellular

Ehrlichia

Intracellular

Anaplasma

Intracellular

Coxiella

Intracellular

Mycoplasma

No cell wall

Ureaplasma

No cell wall

Borrelia

Spirochetes

Leptospira

Spirochetes

Treponema

Spirochetes

Mycobacterium tuberculosis

Acid fast TB

Mycobacterium bovis

Acid fast TB

Mycobacterium avium-intracellulare

Acid fast non-TB mycobacteria

Mycobacterium kansasii

Acid fast non-TB mycobacteria

Mycobacterium marinum

Acid fast non-TB mycobacteria

Mycobacterium scrofulaceum

Acid fast non-TB mycobacteria

Ascaris lumbricoides

Helminth, nematode

Enterobius vermicularis

Helminth, nematode

Strongyloides stercoralis

Helminth, nematode

Trichuris trichiura

Helminth, nematode

Necator americanus

Helminth, nematode

Ancylostoma duodenale

Helminth, nematode

Taenia saginata

Helminth, cestode

Taenia solium

Helminth, cestode

Diphyllobothrium latum

Helminth, cestode

Echinococcus granulosus

Helminth, cestode

Schistosoma haematobium

Helminth, trematode

Schistosoma japonicum

Helminth, trematode

Schistosoma mansoni

Helminth, trematode

Clonorchis sinensis

Helminth, trematode

Cryptosporidium

Protozoa, GI

Cyclospora

Protozoa, GI

Cystoisospora belli

Protozoa, GI

Entamoeba histolytica

Protozoa, GI

Giardia lamblia

Protozoa, GI

Trichomonas vaginalis

Protozoa, STI

Acanthamoeba

Protozoa, CNS/Tissue/Blood

Naegleria fowleri

Protozoa, CNS/Tissue/Blood

Toxoplasma gondii

Protozoa, CNS/Tissue/Blood

Trypanosoma

Protozoa, CNS/Tissue/Blood

Babesia

Protozoa, CNS/Tissue/Blood

Leishmania

Protozoa, CNS/Tissue/Blood

Plasmodium

Protozoa, CNS/Tissue/Blood

Candida albicans

Fungi, yeast

Nakaseomyces glabrata

Fungi, yeast

Candidozyma auris

Fungi, yeast

Cryptococcus neoformans

Fungi, yeast

Cryptococcus gattii

Fungi, yeast

Trichophyton

Fungi, dermatophyte

Microsporum

Fungi, dermatophyte