Fig. 1

Subject enrollment and antibiotic exposure. Fifteen recently intubated subjects were enrolled in the study. The horizontal, gray bars depict the duration of each subject’s enrollment: longitudinal data was collected for ten of the 15 enrolled subjects. Thinner horizontal lines indicate the intravenous or oral antibiotic exposure of each subject, with line color representing antibiotic identity, from 2 days prior to enrollment through the end of sample collection. The color corresponding to each antibiotic is summarized to the right. Asterisks indicate subjects who died during the ICU admission