Adults & childn w/ pneumonias & nosocomial pneumonias; UTI; intra-abdominal, gynaecological (eg, endometritis & pelvic inflammatory disease), skin & skin structure infections; meningitis; septicaemia. Monotherapy or in combination w/ anti-viral or anti-fungal agents as empiric treatment for presumed infections in adult patients w/ febrile neutropenia. Monotherapy or in combination w/ other antimicrobial agents in treatment of polymicrobial infections.