Staphylococcus aureus is a relatively rare bacterium and is normally not associated with the human microbiota.

Prepare for the Medical Management of Biological Casualties Test. Engage with multiple choice questions, comprehensive explanations and detailed content. Equip yourself for success!

Staphylococcus aureus commonly colonizes humans and is a frequent member of the normal microbiota. It routinely resides on the skin and in the nasal passages of many healthy individuals, with a substantial portion of people carrying it asymptomatically. This shows its role as part of the normal flora, even though it can cause disease if it breaches the skin or mucosa or if the immune system is compromised. Because of this well-established association with the human microbiota, the statement that it is relatively rare and not normally associated with humans is incorrect.