Normal microbial flora of the human body
Normal microbial flora means presence of number of microorganisms in and on the human body under normal condition.
Common members of normal flora include;
Saprophyte
Commensals
Facultative pathogens
True pathogens
Bacteria make up most of normal flora of human body
Bacteria, fungi and protozoa comprises normal flora of different regions of the human body, begining with external surface.
- On skype n some Bacteria able to grow as normal flora include;
Species of staphylococcus; mainly staphylococcus epidermidis
Aerobic corynebacteria or diptheroids
Gram positive spore; forming bacilli, streptococcus viridans
Enterococcus fecalis
Gram negative bacilli; E.coli, proteus, non- pathogenic mycobacteria and yeast candida albicans
- In nose
Staphylococcus epidermidis
Staphylococcus aureus
- In nasopharynx
Streptococcus Pneumoniae
Hemolytic streptococci
Predominate
Other genera like;
Staphylococcus
Corynebacterium
Neisseria
Hemophilus
Branhamella
Micrococcus
- Normal flora in respiratory tract
No normal flora occuring due to presence of mucus and alveolar macrophages.
- Normal flora of mouth
Streptococcus
Neisseria
Veillonella
Actinomycetes
Lactobacillus
Yeast
- Normal flora of teeth
Bacteroides
Fusobacterium
Streptococcus mutants
- Normal flora of small intestine
Enterococci
Lactobacilli
Diphtheroids
Yeast candida albicans
- Normal flora of large intestine
Anaerobic gram negative bacilli such as;
Bacteroides and fusobacterium
Gram positive bacilli such as;
Bifidobacterium
Eubacteria
Lactobacillus
Facultative
Anaerobic bacteria such as;
E. Coli, proteus, Klebsiella, enterobacter, pepto-strepto bacilli, yeast candida albican.
- Intestinal flora of breast feed infant include;
Mainly gram negative
Bifidobacteria and gram negative bacteroides species
