Audiologic testing was to be conducted in at least 20 children \< 12 years old, of which at least 9 children were \< 2 years old. Audiologic testing conducted on infants (\< 12 months old) included: evoked otoacoustic emissions testing, acoustic immittance measures (tympanometry and contra and ipsilateral acoustic reflex thresholds) and (optional) threshold auditory brainstem responses. For the older children, testing included evoked otoacoustic emissions testing, acoustic immittance measures (tympanometry and contra ipsilateral acoustic reflex thresholds), and age appropriate behavioral audiologic threshold assessment. Participants with an abnormal audiologic assessment at Day 28 (± 2 days) that exceeded, by a clinically significant margin, any abnormality observed in the Baseline assessment, were considered to have an abnormal audiologic assessment.

Audiologic testing was to be conducted in at least 20 children \< 12 years old, of which at least 9 children were \< 2 years old. Audiologic testing conducted on infants (\< 12 months old) included: evoked otoacoustic emissions testing, acoustic immittance measures (tympanometry and contra and ipsilateral acoustic reflex thresholds) and (optional) threshold auditory brainstem responses. For the older children, testing included evoked otoacoustic emissions testing, acoustic immittance measures (tympanometry and contra ipsilateral acoustic reflex thresholds), and age appropriate behavioral audiologic threshold assessment. Participants with an abnormal audiologic assessment at Day 28 (± 2 days) that exceeded, by a clinically significant margin, any abnormality observed in the Baseline assessment, were considered to have an abnormal audiologic assessment.

Audiologic testing was to be conducted in at least 20 children \< 12 years old, of which at least 9 children were \< 2 years old. Audiologic testing conducted on infants (\< 12 months old) included: evoked otoacoustic emissions testing, acoustic immittance measures (tympanometry and contra and ipsilateral acoustic reflex thresholds) and (optional) threshold auditory brainstem responses. For the older children, testing included evoked otoacoustic emissions testing, acoustic immittance measures (tympanometry and contra ipsilateral acoustic reflex thresholds), and age appropriate behavioral audiologic threshold assessment. Participants with an abnormal audiologic assessment at Day 28 (± 2 days) that exceeded, by a clinically significant margin, any abnormality observed in the Baseline assessment, were considered to have an abnormal audiologic assessment.

Audiologic testing was to be conducted in at least 20 children \< 12 years old, of which at least 9 children were \< 2 years old. Audiologic testing conducted on infants (\< 12 months old) included: evoked otoacoustic emissions testing, acoustic immittance measures (tympanometry and contra and ipsilateral acoustic reflex thresholds) and (optional) threshold auditory brainstem responses. For the older children, testing included evoked otoacoustic emissions testing, acoustic immittance measures (tympanometry and contra ipsilateral acoustic reflex thresholds), and age appropriate behavioral audiologic threshold assessment. Participants with an abnormal audiologic assessment at Day 28 (± 2 days) that exceeded, by a clinically significant margin, any abnormality observed in the Baseline assessment, were considered to have an abnormal audiologic assessment.

Bowel flora was evaluated in participants from birth to \< 2 years of age by performing polymerase chain reaction (PCR) analysis for Clostridium difficile (C diff) and culture for vancomycin-resistant enterococci (VRE) on a stool specimen or rectal swab. Samples were analyzed at Baseline and at the Test of Cure (TOC) visit.