#asktheexpert my doubt is whether influvac and vaxigrip can be interchangeably given to a child.my child was given influvac and now vaxigrip is available...even if i would postpine the vaccination,my doubt is can a child be given influvac doses and for yearky booster vaxigrip is given.is it ok??because both are different formulations.pl answer my query.not about giving vaccine or not its about the two different types of vaccines which is better