Flu shot age: what to know

Age can affect the risk of serious influenza illness, the dose or formulation that is suitable, and whether a child needs a particular vaccination schedule. Babies and young children may have different options from adults, while older adults may be offered a formulation chosen for their immune response. These decisions also depend on local public-health guidance and product licensing.

Age is only one part of the assessment. Pregnancy, asthma, diabetes, immune problems, allergies, and previous vaccine reactions can change the conversation. A clinician can match the recommendation to the individual rather than relying on age alone.

When booking, provide the person’s age, health conditions, current medicines, pregnancy status where relevant, and vaccination history. For a child, bring the child’s records and ask whether more than one visit is needed. If the person is currently unwell, mention any fever or significant symptoms before attending.

Use the available [Inactivated Vaccine](/materials/inactivated-vaccine/) information to discuss what type of flu vaccine is being offered. Follow the provider’s instructions after the injection and keep the date in your health record.

After vaccination, seek urgent help for breathing difficulty, swelling of the face or throat, widespread hives with dizziness, collapse, or severe weakness. For a child, urgent assessment is needed if they are difficult to wake, breathing unusually hard, or not drinking and passing urine normally. Contact a clinician for symptoms that are worsening or unusually severe.

Ask: Is vaccination recommended for this age and health profile? Which formulation is suitable? Does the child need a follow-up dose? Should an illness, pregnancy, or previous reaction change the timing?