Staphylococcus aureus normal flora

Some of the organotin-containing polymers inhibit Candias albicans, the yeast responsible for infections in humans better than commercially available applications while leaving the normal flora unharmed. Others inhibit methicillin-resistant Staphylococcus aureus (MRSA) (structure 11.22), preferentially. 

Staphylococcus aureus and Staphylococcus epidermidis are Grampositive cocci that normally colonize the epithelial surfaces of humans [20, 21], 5. epidermidis is considered part of the normal human microbial flora, while S. aureus is usually regarded as a transient member. Colonization by either species usually does not lead to adverse events, unless the bacterium or their extracellular products penetrate the epithelial layer, which may cause serious infections such as necrotizing pneumonia, and toxic shock syndrome [22]. 

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