Escherichia coli
o Gram negative
o Rod-shaped
o commonly found in
the lower intestine of
warm-blooded
organisms
o can cause
serious food
poisoning in humans
Staphylococcus aureus
o Gram positive
o Grape-like clusters
o commonly found in the
human respiratory
tract and on the skin
o cause of skin
infections (e.g. boils),
respiratory disease
(e.g. sinusitis),
and food poisoning