What is antibacterial spectrum of macrolides?

Macrolides have a broad-spectrum activity against many bacteria, including gram-positive cocci (such as Streptococcus pneumoniae and Staphylococcus aureus), atypical pathogens (such as Mycoplasma pneumoniae and Legionella pneumophila), and some gram-negative bacteria (such as Haemophilus influenzae and Moraxella catarrhalis).