Infections caused by susceptible microorganisms: - infections of the upper respiratory tract, sinuses of the nose and middle ear (bacterial pharyngitis, tonsillitis, sinusitis, otitis media); - infections of the lower respiratory tract (bacterial bronchitis, community-acquired pneumonia); - infections of the skin and soft tissues (erythema migrans (stage I of Lyme disease), erysipelas, impetigo and secondary pyoderma) - sexually transmitted infections (uncomplicated genital infections caused by Chlamydia trachomatis). According to preclinical studies, azithromycin is effective against many sexually transmitted infections.