Abstract
Staphylococcus aureus is one of the most common causes of nosocomial infections. Staphylococci inhabit the skin and human nose (Mertz et al., 2007). The presence of biofilms on the mucosa of subjects with chronic sinusitis has been well documented (Cryer et al., 2004). Recent studies reported the colonizing ability of S. aureus in populations (Van Belkum et al., 2009) and the oral cavity (Kouidhi et al., 2010). The ability of S. aureus to form biofilms is an important virulence factor in Human disease (Luong et al., 2009) which can be detected phenotypically. Biofilm is an exopolysaccharide which are implicated in medical device-related infections (Knobloch et al., 2002). It has been reported that S. aureus