Bojang A, et al. – An ancillary study was conducted among individuals who had participated in a cluster–randomized PCV–7 trial in rural Gambia (some clusters were wholly–vaccinated while in others only young children had been vaccinated), to determine the prevalence and risk factors for Staphylococcus aureus nasopharyngeal carriage. Findings suggested an increase in prevalence of nasopharyngeal carriage of S. aureus among Gambian children during the rainy season among those children living in PCV–7 wholly vaccinated communities. However, there appeared no association of carriage of S. aureus with carriage of S. pneumoniae.