Answer:
There is no documentation regarding streptococcus aureus (no italics, non-existant). However, there is the organism Staphylococcus aureus.
Enterics are organisms known to exist mainly in the intestinal tract as normal flora, but can invade or cause opportunistic infections in other areas of the human body. These organisms belong to the Enterobacteriaceae spp.
Staphylococcus aureus is not considered an enteric organism. This does not mean it can not be found in the intestinal tract, just that it is not commonly found there.