Healthy or Stable Chronic Illness Clinical Trial
Official title:
A Randomized, Double-Blind, Active Controlled Study to Evaluate the Immunogenicity of Quadrivalent LAIV in Children
The primary objective of this study is to demonstrate the immunologic noninferiority of Q/LAIV to FluMist in children 2 to 17 years of age.
The randomized, double-blind study was designed to demonstrate the immunologic noninferiority of Q/LAIV compared to FluMist in children 2-17 years by comparing the strain-specific post-dose geometric mean titers of hemagglutination inhibition antibodies. Children were randomized 3:1:1 to receive Q/LAIV or one of two FluMist vaccines. Subjects 9-17 years of age received a single dose, and those 2-8 years of age received two doses one month apart. Serum was obtained 1 month after dose 1 except in influenza vaccine-naive subjects 2-8 years old, when it was obtained after dose 2. Safety and tolerability were also assessed. ;
Allocation: Randomized, Endpoint Classification: Bio-equivalence Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor), Primary Purpose: Prevention