The CDC has released a list of recommendations for the 2019-2020 flu season. (It's just weeks away.) Offer vaccination before flu activity picks up and keep going throughout the season. You'll want to read the whole list, but among the highlights:
Changes to the approved age range for one product and to the dose volume for another.
Clarification on patients with egg allergies.
Reinforcement of the populations at high risk for complications from influenza infection: