The ability of S. aureus to acquire antibiotic resistance
and to adapt to new antibiotics is well established. It
is well recognized that the extensive use of antibiotics has
resulted in increased resistance among. S. aureus clinical
isolates. In some areas, more than 95% of S. aureus isolates
are now resistant to penicillin or ampicillin and more
than 50% have developed resistance to methicillin .
Methicillin resistant S. aureus (MRSA) infections are observed
primarily in hospital settings but there have been
alarming reports recently of community acquired MRSA infections.