Three health Brazilian families were examined for their oral carriage
of Staphylococcus aureus the most common persistent human
pathogen. The mean level of S.aureus colonization was high 56.2% and
25.9% of the individuals were methicillin-resistant S. aureus (MRSA)
carriers. However, a low level of resistance to eight antimicrobial
agents were found, except for penicillin (85.1%), erythromycin (40.7%)
and amoxicillin (22.2%)
