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appendix 1 Normal Human Flora 281<br />

Skin<br />

S. epidermidis<br />

S. aureus<br />

Corynebacterium<br />

Propionibacterium<br />

Stomach<br />

± H. pylori<br />

Large intestine<br />

and rectum<br />

Bacteroides<br />

Fusobacterium<br />

Bifidobacterium<br />

Clostridium<br />

Enterococcus<br />

Lactobacillus<br />

S. bovis<br />

Coliforms<br />

– E. coli<br />

– Enterobacter<br />

– Citrobacter<br />

Upper airways<br />

S. pneumoniae<br />

S. pyogenes<br />

Neisseria sp.<br />

H. influenzae<br />

± S. aureus (nose)<br />

Lower airway<br />

Normally sterile<br />

Small intestine<br />

Proximal<br />

– Lactobacillus<br />

– Enterococcus<br />

Distal<br />

– Lactobacillus<br />

– Enterococcus<br />

– Bacteroides<br />

– Coliforms<br />

Everywhere<br />

S. epidermidis<br />

Corynebacterium<br />

*Genitourinary tract<br />

Lactobacillus Corynebacterium<br />

Streptococcus Candida<br />

E. coli<br />

*In the urinary tract, only the anterior urethra<br />

should be colonized.

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