Streptococcus pneumoniae including those strains resistant to beta-lactam and macrolide antibiotics Streptococcus of groups A, C and G Methicillin-susceptible Staphylococcus Haemophilus influenzae including beta-lactamase producing strains Moraxella catarrhalis Mycoplasma pneumoniae, Chlamydia psittaci and pneumoniae Legionella