Randomized Study of Immune Response to Licensed Influenza Vaccines in Children and Adolescents

Licensed and approved Live Attenuated Influenza Vaccination (LAIV) will be preferentially given to all children aged 5-8 years old as recommended by Advisory Committee on Immunization Practices. A modified randomization scheme in which every other child aged 9-17 years enrolled in the study will be given LAIV will be used. The rest of the children aged 9-17 years old will receive IIV.

"A modified randomization scheme in which every other child aged 9-17 years enrolled in the study will be given IIV will be used. The rest of the children 9-17 years old will receive LAIV.~\[Note: Although we do not anticipate exhausting the supply of LAIV, should this occur, children aged 5-8 will be offered IIV as it is also approved in this age group and should be used if LAIV is unavailable.\]"