Patients presenting with severe influenza pneumonia who may have concurrent bacterial superinfection should also receive antibacterial agents effective against the most common etiologic pathogens, such as Streptococcus pneumoniae, Streptococcus pyogenes, and Staphylococcus aureus, including methicillin-resistant Staphylococcus aureus, according to published guidelines in the management of communityacquired pneumonia [47] .