Safety & Pharmacokinetics Study of Inhaled Laninamivir Octanoate TwinCaps® Dry Powder Inhaler in Children With Influenza

Approximately 48 subjects aged 5-17 years inclusive will be randomised into the study. Subjects with recent onset of presumptive influenza will have influenza A or B infection confirm by Rapid Antigen Test. The study will be conducted on an outpatient basis. The dose is administered in a single session in the clinic on Day 1. The subject will return to the clinic for assessments and follow up.