An Intravenous (IV) Zanamivir Pharmacokinetics (PK) Study in Hospitalized Neonates and Infants With Influenza Infection

An Open Label, Single Arm Study to Evaluate Single and Multiple Dose Pharmacokinetics, Safety and Tolerability, and to Explore Clinical Outcomes of Treatment With Intravenous (IV) Zanamivir in Neonates and Infants Under 6 Months of Age With Confirmed Complicated Influenza Infection