Nejm 2006;355:2125; Ann IM 2001;134:518, 521
Cause:Usually viral esp influenza; Bordetella p., mycoplasma, and TWAR (C. pneumonia) are all <10%
Sx:Productive cough
Si:No T°, tachycardia, tachypnea, or focal lung findings
Xray:Chest if cough >3 wk
Rx: Symptomatic, abx for bacteriological entities, esp bordatella, mycoplasma. Rarely but emerging fungal etiologies