CDC guidance identifies September and October as usual flu-vaccination months
CDC guidance says September and October are generally suitable months for most people needing one flu-vaccine dose for the season.
What the record says
The current interim clinical guidance also says vaccination should ideally be offered during September or October for most one-dose recipients, with separate timing considerations for children and pregnancy.
Practical next step
Ask a healthcare professional about the appropriate vaccine and timing for your age, health, allergies and vaccination history.
Limits and what is not established
This is general CDC guidance, not personal medical advice or a guarantee against flu. The key-facts page flags forthcoming updates; current interim guidance is also linked. No vaccine-brand age indication is asserted here.
Sources checked October 7, 2026. This record reflects the information reviewed then; later notices may change instructions or arrangements.
Original sources
Centers for Disease Control and Prevention: original information
CDC interim clinical guidance: original information