A 14 year old boy present with headache, fever and cought for 2 days. Sputum is scant and non-purulent and gram stain reveals many whit cells but no organisms. The treatment should be initiated with:: (A) Cefazolin, (B) Erythromycin, (C) Amikacin, (D) Trovafloxacin
Answer is B. (Ref: KDT 6/e p729) Diagnosis is atypical pneumonia and DOC is erythromycin.