Bronchitis, severe campylobacter enteritis, chancroid diphtheria, Legionnaire's disease & other Legionella infections, neonatal conjunctivitis, pertussis, pneumonia (mycoplasma & other atypical pneumonias, streptococcal), sinusitis; STI. Surgical prophylaxis for bowel surgery in combination w/ neomycin. Component in the treatment & prophylaxis of
Mycobacterium avium complex (MAC) infections.