Recognize the clinical features and the proper antimicrobial therapy for atypical pneumonia.

Explanation:

Atypical pneumonia and typical pneumonia cannot be distinguished on clinical or Xray criteria. This has been tested in Double blind - randomized studies. If a pneumonia has been brewing for a few days and the Xray findings are much worse than the clinical condition then the patient is likely to have atypical pneumonia and should be treated with a Macrolide x 7-10 days.

Mycoplasma needs treatment for 3 weeks.