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Table #2: Outpatient Pneumonia without Comorbidity in Patients <= 60 Years

Most Common Pathogens	Therapy
S pneumonia M pneumonia Respiratory viruses C pneumonia H influenzae Miscellaneous Legionella species Staphylococcus aureus Mycobacterium tuberculosis endemic fungi aerobic gram-negative bacilli	Erythromycin ** or Tetracycline

* Excludes patients at risk for human immunodeficiency viruses (HIV)

** Consider using the newer macroclides in those intolerant of erythromycin and in smokers (to treat H influenza)

*** Many isolates of S pneumoniae are resistant to tetracycline, and it should be used only if the patient is allergic or intolerant of macrolides