List of human flora

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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[edit]

Natural cavities[edit]

Skin[edit]

Hair follicles[edit]

External ear[edit]

Mucous membranes[edit]

Eye[edit]

Conjunctiva[edit]

Gastro-intestinal tract[edit]

Binomial name Location
Achromobacter spp Large intestine, small intestine (Ileon)
Acidaminococcus fermentans Large intestine
Acinetobacter calcoaceticus Large intestine
Actinomyces spp Amygdala[citation needed]
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, amygdala
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, amygdala
Enterococcus faecalis General distribution
Enterococcus faecium General distribution
Escherichia coli General distribution
Eubacterium spp Mouth
Flavobacterium spp Large intestine, small intestine (Ileon)
Fusobacterium spp Mouth, amygdala
Fusobacterium nucleatum Mouth
Gordonia Bacterium spp Sputum
Haemophilus parainfluenzae Mouth
Haemophilus paraphrophilus Mouth
Lactobacillus spp Mouth, Saliva
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, Amygdala
Mycoplasma spp Mouth
Mycobacterium chelonae Sputum
Neisseria spp Mouth
Neisseria sicca Saliva, sputum
Peptococcus spp Mouth, large intestine
Peptostreptococcus spp Mouth, amygdala
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, amygdala, large Intestine
Vibrio spp Large intestine, Small intestine (Ileon)
Vibrio sputorum Mouth
Wolinella succinogenes Mouth
Yersinia enterocolitica Large intestine

Respiratory tract[edit]

Color-enhanced scanning electron micrograph showing Salmonella typhimurium (red) invading cultured human cells
Binomial name Location
Acinetobacter spp Nasopharynx
Burkholderia cepacia complex Lung
Campylobacter sputorum Nasopharynx
Candida albicans Pharynx
Cardiobacterium spp Nose
Chlamydophila pneumoniae Lung
Citrobacter freundii Throat
Eikenella corrodens General distribution
Haemophilus spp Nasopharynx
Haemophilus parainfluenzae Pharynx
Haemophilus paraphrophilus Pharynx
Kingella spp Upper respiratory Tract
Kingella kingae Upper respiratory Tract
Moraxella spp Nasopharynx
Moraxella catarrhalis Nasopharynx
Mycoplasma orale Oropharynx
Mycoplasma pneumoniae Respiratory epithelium
Neisseria spp Nasopharynx
Neisseria cinerea Nasopharynx
Neisseria elongata Pharynx
Neisseria gonorrhoeae Pharynx[citation needed]
Neisseria lactamica Nasopharynx
Neisseria meningitidis Nasopharynx
Neisseria mucosa Nasopharynx
Neisseria sicca Nasopharynx
Peptococcus spp Upper respiratory tract
Peptostreptococcus spp Pharynx
Pseudomonas aeruginosa Lung
Selenomonas sputigena Nasopharynx
Staphylococcus aureus Nose
Streptobacillus spp Throat, nasopharynx
Streptococcus constellatus Oropharynx
Streptococcus intermedius Oropharynx
Streptococcus mitis General distribution
Streptococcus pyogenes Upper respiratory tract
Streptococcus viridans Pharynx

Urogenital tract[edit]

Binomial name Location
Acinetobacter spp Anterior urethra, vagina
Bacteroides spp External genitalia
Bifidobacterium spp Vagina
Candida albicans Anterior urethra, external genitalia, vagina
Chlamydia trachomatis Urethra, vagina, fallopian tubes, prostate gland
Clostridium spp Vagina
Corynebacterium spp Anterior urethra, external genitalia, vagina
Enterobacteriaceae Anterior urethra, external genitalia, vagina
Neisseria gonorrhoeae Urethra, vagina, prostate gland
Streptococcus viridans Anterior urethra, external genitalia, vagina
Eikenella corrodens General distribution
Streptococcus anginosus General distribution
Staphylococcus aureus Perineum
Gardnerella vaginalis Female reproductive system
Mycoplasma hominis Cervix, vagina
Mobiluncus curtisii Vagina
Mobiluncus mulieris Vagina

References[edit]

External links[edit]