Certain parts of the skin and mucuous membranes of humans and animals
are carrying Staphylococcus aureus. These staphylococci are belonging
to their physiological microflora. The data discussed in this paper de
monstrate clearly that the carrier frequency of Staphylococcus aureus
is locally different depending on epidemiological facts. Carriers of s
taphylococci may become the source of nosocomial infections. Spreading
ability, virulence and epidemic tendency of Staphylococcus aureus are
strain-specific features. Only little is known about the underlying m
echanisms.