Ear canal normal flora

Organism	%*
Aerobic bacteria
Staphylococcus epidermis	78
Diptheroid species	29
Alpha hemolytic streptococcus	18
Pseudomonas aeruginosa	11
Staphylococcus aureus	7
Anaerobic bacteria
Cutibacterium (formerly Propionibacterium) acnes	18
Peptococcus	3

* % of total patients with growth of this organism (n = 72).

Data from Brook, I, Acta Otolaryngol 1980; 91:285.

Graphic 69985 Version 3.0