<prompt> The antibacterial agent which can be used intranasally as the prophylaxis against recurrent S.aureus infection is:CefazolinMupirocinGentamicinMoxifloxacin  <response>: Mupirocin is a simple agent which can be used intranasally as prophylaxis against S.aureus. Ref: Harrisons Edition-18, Page : 1148, Table-1339. 