Methicillin-resistant Staphylococcus aureus (MRSA) is among the most important highly virulent and multi-resistant pathogens worldwide. Microbiological and molecular characterizations of MRSA strains may provide information regarding the emergence and distribution of specific pathogenic strains as well as the spread of virulence and resistance determinants. This information is useful for alerting the public, as well as the medical and scientific community, to the problem of antimicrobial resistance and for designing empirical treatment regimens and formulating possible preventive strategies.