List of human flora

Bacteroides spp. anaerobically cultured in blood agar medium

Yersinia enterocolitica colonies growing on XLD agar plates
This article lists some of the species recognized as human flora in humans.
Whole-body distributed
- Acinetobacter calcoaceticus
- Burkholderia cepacia
- Pseudomonas pseudoalcaligenes
- Peptostreptococcus spp
Natural cavities
Skin
Main article: Skin flora
- Acinetobacter spp
- Bacillus spp
- Candida albicans
- Corynebacterium spp
- Corynebacterium parvum
- Demodex folliculorum
- Enterobacter cloacae
- Epidermophyton floccosum
- Micrococcus spp
- Micrococcus luteus
- Mycobacterium spp
- Neisseria spp
- Peptostreptococcus spp
- Malassezia ovale
- Propionibacterium spp
- Propionibacterium acnes
- Pseudomonas aeruginosa
- Sarcina spp
- Staphylococcus aureus
- Staphylococcus epidermidis
- Staphylococcus haemolyticus
- Streptococcus viridans
- Trichophyton spp
Hair follicles
External ear
Mucous membranes
Eye
Conjunctiva
- Chlamydia trachomatis
- Chlamydophila pneumoniae
- Haemophilus aegyptius
- Haemophilus influenzae
- Moraxella spp
- Neisseria spp
- Staphylococcus aureus
- Staphylococcus epidermidis
- Streptococcus viridians
Gastrointestinal tract
Main article: Gut flora
Binomial name | Location |
---|---|
Achromobacter spp | Large intestine, small intestine (Ileon) |
Acidaminococcus fermentans | Large intestine |
Acinetobacter calcoaceticus | Large intestine |
Actinomyces spp | Mouth, small and large intestine |
Actinomyces viscosus | Mouth |
Actinomyces naeslundii | Mouth |
Aeromonas spp | Large intestine, small intestine (Ileon) |
Aggregatibacter actinomycetemcomitans | Mouth |
Anaerobiospirillum spp | Feces |
Alcaligenes faecalis | Large intestine, small intestine (Ileon) |
Arachnia propionica | Mouth |
Bacillus spp | Large intestine |
Bacteroides spp | Mouth, GI tract |
Bacteroides gingivalis | Mouth |
Bacteroides fragilis | General distribution |
Bacteroides intermedius | Mouth |
Bacteroides melaninogenicus | Mouth, feces |
Bacteroides pneumosintes | Pharynx |
Bacterionema matruchotii
(Corynebacterium matruchotii, new combination 1983 IJSB 33:438) |
Gingiva |
Bifidobacterium spp | Large intestine, feces |
Buchnera aphidicola | Mouth |
Butyriviberio fibrosolvens | Large intestine |
Campylobacter spp | Large intestine |
Campylobacter coli | General distribution |
Campylobacter sputorum | Mouth |
Campylobacter upsaliensis | Mouth |
Candida albicans | Mouth |
Capnocytophaga spp | Mouth |
Clostridium spp | Large intestine, small intestine (Ileon) |
Citrobacter freundii | Sputum |
Clostridium difficile | Large intestine |
Clostridium sordellii | Stomach, small intestine, large intestine, rectus, anus channel |
Corynebacterium spp | Mouth |
Eikenella corrodens | General distribution, mouth |
Enterobacter cloacae | General distribution |
Enterococcus spp | Mouth, GI tract |
Enterococcus faecalis | General distribution |
Enterococcus faecium | General distribution |
Escherichia coli | General distribution |
Eubacterium spp | Mouth, GI tract |
Flavobacterium spp | Large intestine, small intestine (Ileon) |
Fusobacterium spp | Mouth, GI tract |
Fusobacterium nucleatum | Mouth |
Gordonia Bacterium spp | Sputum |
Haemophilus parainfluenzae | Mouth |
Haemophilus paraphrophilus | Mouth |
Lactobacillus spp | Mouth, Saliva, GI tract (known probiotic) |
Leptotrichia buccalis | Mouth |
Methanobrevibacter smithii | Intestines |
Morganella morganii | Feces |
Mycobacteria spp | Large intestine, small intestine (Ileon) |
Mycoplasma spp | Large intestine, small intestine (Ileon) |
Micrococcus spp | Mouth |
Mycoplasma spp | Mouth |
Mycobacterium chelonae | Sputum |
Neisseria spp | Mouth |
Neisseria sicca | Saliva, sputum |
Peptococcus spp | Mouth, large intestine |
Peptostreptococcus spp | Mouth, GI tract |
Plesiomonas shigelloides | General distribution |
Porphyromonas gingivalis | Mouth |
Propionibacterium spp | Large intestine |
Propionibacterium acnes | General distribution |
Providencia spp | Feces |
Pseudomonas aeruginosa | Large intestine, small intestine (Ileon) |
Ruminococcus bromii | Large intestine |
Rothia dentocariosa | Mouth |
Ruminococcus spp | Cecum, large intestine |
Sarcina spp | Large intestine |
Staphylococcus aureus | Mouth, large intestine, small intestine (Ileon) |
Staphylococcus epidermidis | Mouth |
Streptococcus anginosus | General distribution |
Streptococcus mutans | Teeth: Dental plaque |
Streptococcus oralis | Teeth: Dental plaque |
Streptococcus pneumoniae | Nasopharynx |
Streptococcus sobrinus | Teeth: Dental plaque |
Streptococcus viridans | Mouth, large intestine, small intestine (Ileon) |
Torulopsis glabrata | Mouth |
Treponema denticola | Mouth |
Treponema refringens | Mouth |
Veillonella spp | Mouth, large Intestine |
Vibrio spp | Large intestine, Small intestine (Ileon) |
Vibrio sputorum | Mouth |
Wolinella succinogenes | Mouth |
Yersinia enterocolitica | Large intestine |
Respiratory tract

Color-enhanced scanning electron micrograph showing Salmonella typhimurium (red) invading cultured human cells
Urogenital tract
Binomial name | Location |
---|---|
Acinetobacter spp | Anterior urethra |
Bacteroides spp | External genitalia |
Candida albicans | Anterior urethra, external genitalia, |
Corynebacterium spp | Anterior urethra, external genitalia, |
Enterobacteriaceae | Anterior urethra, external genitalia, |
Streptococcus viridans | Anterior urethra, external genitalia, |
Eikenella corrodens | General distribution |
Streptococcus anginosus | General distribution |
Staphylococcus aureus | Perineum |
Vagina
Further information: List of microbiota species of the lower reproductive tract of women
Further information: List of bacterial vaginosis microbiota
Further information: Vaginal microbiota in pregnancy
References
External links
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