Open Label, Dose-finding, Pharmacokinetics, Safety and Tolerability Study of Oritavancin in Pediatric Participants With Suspected or Confirmed Bacterial Infections

This is a Phase 1, multicenter, open-label, PK, safety and tolerability study of oritavancin in pediatric participants (\<18 years of age) with suspected or diagnosed Gram-positive bacterial infections or pediatric participants requiring peri-operative prophylactic antibiotics. Approximately 54 participants will be enrolled at 5-10 United States centers. This study will include 5 age cohorts and participants will be entered in a stepwise approach starting with the older age cohort (12 to \<18 years). The starting dose will be intravenous (IV) oritavancin 15 milligrams/kilogram. The safety, tolerability and PK data will be reviewed at the completion of each cohort to ensure safety and determine the appropriate dose for the next age cohort. At least 8 participants will be enrolled in each cohort except for the birth to \<3 month age cohort which will have at least 16 participants enrolled. Three PK samples will be collected over 14 days. The safety follow-up will complete with a 60-day phone call to the caregiver.