<Tr> <Td> Domain: </Td> <Td> Bacteria </Td> </Tr> <Tr> <Td> Kingdom: </Td> <Td> Eubacteria </Td> </Tr> <Tr> <Td> Phylum: </Td> <Td> Firmicutes </Td> </Tr> <Tr> <Td> Class: </Td> <Td> Bacilli </Td> </Tr>

What is the most common source of s. aureus organisms