1500 S.aureus isolates collected in hospitals in different region of Russia in 1998-2002 and 10 MRSA isolates from hospitalized patients over period [1973] [1974] [1975] [1976] [1977] [1978] [1979] [1980] [1981] [1982] [1983] [1984] [1985] [1986] [1987] [1988] [1989] [1990] selected from the laboratory collection were studied.