The day after discharge (day 6 of illness), he was readmitted with lethargy, decreased oral intake, and diminished urine output. Tachycardia (180-200 beats/min), tachypnea, and temperature to 38.7°C were noted. Chest film showed a right upper lobe infiltrate (Figure 1, B). The WBC was 55.1×109/L with 0.48 neutrophils and 0.41 lymphocytes. Ampicillin, gentamicin, and erythromycin therapy was started. Paroxysms of coughing continued and oxygen by nasal cannula was administered. On day 7 of illness, the WBC was 65.6×109/L. Deterioration of his respiratory status necessitated endotracheal intubation. Chest film demonstrated an opaque right lung (Figure 1, C). An acute decrease in blood pressure to 27/13 mm Hg was unresponsive to boluses of albumin and epinephrine. Ventricular fibrillation developed and the child could not be resuscitated.