Normal Human Flora
Oral cavity
Viridans streptococci Peptococcus Peptostreptococcus Eikenella Haemophilus
Normal Human Flora
Upper Airways
S. pneumoniae S. pyogenes Neisseria species H. influenzae \+- S. aureus (nose)
Lower airway normally sterile
Normal Human Flora
Skin
S. epidermidis
S. aureus
Corynebacterium
Propionibacterium
Normal Human Flora
Stomach
+- H. pylori
Normal Human Flora
Small Intestine Proximal
Lactobacillus
Enterococcus
Normal Human Flora
Small Intestine Distal
Lactobacillus
Enterococcus
Bacteroides
Coliforms
Normal Human Flora
Large Intestine and Rectum
Bacteroides Fusobacterium Bifidobacterium Clostridium Enterococcus Lactobacillus S. bovis Coliforms -E. coli -Enterobacter -Citrobacter
Normal Human Flora
Genitourinary Tract
Only the anterior urethra should be colonized
Lactobacillus Streptococcus E. coli Corynebacterium Candida