1. A research nurse will explain to the parents of the participants what is to be expected in the context of this project. She will ask the patients to read the consent form for the project. She will mention that there will be a follow-up by telephone 24 hours after the vaccination to ask about the clinical status of the child. Those who accept will have to sign the consent form. If they do not accept, they will be vaccinated using TIV according to the current recommendation of Quebec public health.