NATURAL FLORA

Natural flora of skin

Organism	observations
Staphylococcus epidermidis	Common, occasionally pathogenic
Staphylococcus aureus	Infrequent, usually pathogenic
Staphylococcus warneri	Infrequent, occasionally pathogenic
Streptococcus pyogenes	Infrequent, usually pathogenic
Streptococcus mitis	Frequent, occasionally pathogenic
Propionibacterium acnes	Frequent, occasionally pathogenic
Corynebacterium spp.	Frequent, occasionally pathogenic
Acinetobacter johnsonii	Frequent, occasionally pathogenic
Pseudomonas aeruginosa	Infrequent, occasionally pathogenic
Candida albicans

Normal skin flora

Gm +cocci	Gm +bacilli
Staph. epidermis--- m.c. among skin flora Staph. aureus Strepto M,icrococci	Corynebacterium Propionobacterium acnes

Normal conjunctival sac flora

Gm +cocci	Gm +ive bacilli	Gm-ive bacilli
Staph. epidermis--- m.c.  > Staph. aureus Streptococcus pneumonia	Corynebacterium Propionobacterium acnes	Moraxella Neisseria

Bacteria in mouth

M.c.- diptherioids

Organism m.c. involved in plaque formation-----------streptococcus mutans

Spirochaetes §  Borrelia §  Treponema Others----Actinomyeces Gm –ive cocci §  Nesaseria Gm-ive rods §  Hemophiolus Gm +ive bacilli §  Corynebacterium §  Propionobacterium acnes Gm+ive cocci §  Staphylococcus aureus §  Streptococcus viridians §  Streptococcus mutans Anaerobes §  Fusobacterium §  Bacteroides §  Lactobacillus §  Prevotella