A patient is hospitalized for pneumonia. Gram-positive cocci in clusters are seen on sputum gram stain. Which of the following clinical scenarios is most commonly associated with this form of pneumonia?
HIV positive adult with a CD4 count less than 150 and an impaired diffusion capacity
An otherwise healthy young adult with a week of mild fatigue, chills, and cough
Hospitalized adult with development of pneumonia symptoms 2 weeks following a viral illness
An alcoholic with evidence of empyema and "currant jelly sputum"