Evaluation of Pharmacokinetics, Safety, and Tolerability of Ceftazidime-avibactam in Neonates and Infants. (NOOR)

This study will assess the pharmacokinetics, safety, and tolerability of single and multiple doses of intravenous ceftazidime-avibactam in hospitalized infants and neonates from 26 weeks gestation to 3 months of age. In Part A of the study all patients will receive a single dose of ceftazidime-avibactam. In Part B all patients will received multiple doses of ceftazidime-avibactam. Efficacy will be assessed in the infants and neonates receiving multiple doses of ceftazidime-avibactam.