Treatment of the following infections when caused by susceptible strains of the designated microorganisms: Uncomplicated urinary tract infections caused by E. coli and P. mirabilis; otitis media caused by H. influenza (β-lactamase positive and -negative strains), Moraxella (Branhamella) catarrhalis (most of which are β-lactamase positive) and Streptococcus pyogenesis; acute bronchitis and acute exacerbations of chronic bronchitis causes by Streptococcus pneumoniae and Haemophilus influenzae (β-lactamase positive and -negative strains). Uncomplicated gonorrhoeae (cervical/urethral) caused by Neisseria gonorrhoeae (penicilinase-and non-penicilinase-producing strains). Sinusitis caused by susceptible organism to cefixime.