Abstract: Macrolide formulations, such as an erythromycylamine formulation, for delivery by aerosolization are described. The concentrated erythromycylamine formulations contain an amount of erythromycylamine effective to treat infections caused by susceptible bacteria. Unit dose devices having a container containing a formulation of the macrolide antibiotic in a physiologically acceptable carrier are also described. Methods for treatment of pulmonary infections by a formulation (liquid solution, suspension, or dry powder) delivered as an aerosol having mass median aerodynamic diameter predominantly between 1 to 5 &mgr;m are also described.

Abstract: Methods, compounds and compositions are provided for inhibiting the growth of pathogenic microbes in vitro and of treatment of pathogenic bacterial infections in vivo using an antibacterial monobactam compound and a mucolytic agent.

Abstract: A method for treatment of diseases caused by Chlamydia infection is disclosed comprising administering a rifamycin of the formula (I): ##STR1## wherein R.sup.1 is hydrogen atom or acetyl, and X is oxygen, sulfur or a group NR, in which R is hydrogen, an alkyl group having 1 to 7 carbon atoms or a group of the formula (II): ##STR2## in which n is an integer of 1 to 3; or a physiologically acceptable salt thereof.