Children's Flu Vaccine 2026: NHS Guide for Toddlers

If your child is aged 2 or 3 on 31 August 2026, the NHS offers them a free flu vaccine this autumn, and for most children it's a quick nasal spray rather than a jab. School-aged children from Reception to Year 11 are eligible too, and so are children from 6 months old with certain long-term health conditions. This guide covers who is eligible for the children's flu vaccine in 2026, how it's given, who should wait and how to book.

Who can have the children's flu vaccine in 2026?

According to the UKHSA guide to the autumn 2026 flu vaccine, eligibility from 1 September 2026 covers:

• All children aged 2 or 3 years on 31 August 2026 (usually offered through the GP surgery).
• School-aged children from Reception to Year 11 (usually offered at school, with sessions starting in September).
• Children from 6 months to under 18 years in a clinical risk group, such as those with asthma, diabetes or a weakened immune system.

The NHS children's flu vaccine page sets out the same groups. Healthy babies under 2 aren't part of the routine offer, which is one reason the rest of the household matters: the NHS says vaccinating children also helps protect vulnerable people around them, including babies and pregnant women.

Nasal spray or injection?

The UKHSA says most children are offered a nasal spray, which is quick and painless. It contains a live but weakened flu virus, and UKHSA states that the weakened virus does not cause flu in the children who receive it. Children who can't have the spray, including those under 2, those with a previous severe allergic reaction and those with a severely weakened immune system, are given an injection instead, according to the NHS.

Gelatine and the injected alternative

The NHS notes that the nasal spray contains a small amount of porcine (pig) gelatine. If that's a concern for your family, an injected vaccine without gelatine is available on request, so ask when you book.

Common side effects

The NHS lists mild effects after the nasal spray: a blocked or runny nose, loss of appetite, tiredness and a headache. It describes serious reactions as very rare. If your child has a high temperature on the day, the NHS advises waiting until they feel better before having the vaccine. For fever advice generally, see our guide to baby fever and when to call 111.

Why does the NHS offer it to young children?

The NHS says flu can be very unpleasant for children, and that vaccinating them also helps protect more vulnerable people they mix with, including babies, pregnant women and older relatives. UKHSA adds that flu usually peaks in December and January, so having the vaccine in autumn means protection is in place before the busiest part of the season. Because flu viruses change, the vaccine is offered every year, so last year's dose doesn't carry over.

What to expect on the day

The nasal spray is a quick squirt into each nostril with no needle, which many parents find easier with a wriggly two-year-old. UKHSA describes it as quick and painless. Keep your child calm and still, and let the vaccinator know about any health conditions or medicines beforehand. If your child is given the injection instead, ask the vaccinator what to expect afterwards.

What if your child is in a clinical risk group?

Children from 6 months to under 18 with certain long-term conditions, such as asthma, diabetes or a weakened immune system, are eligible even if they're outside the usual age groups. The NHS says those who can't have the nasal spray, including children under 2, get the injected vaccine. If you're unsure whether a condition counts, ask your GP, practice nurse or health visitor rather than guessing.

Where and when to get it

• School-aged children: vaccination at school starts from 1 September 2026, according to UKHSA.
• 2 and 3 year olds: contact your GP surgery, or check whether a local pharmacy offers the NHS service. Pharmacy availability varies, so confirm before travelling.
• Clinical risk groups: UKHSA says that from 1 October 2026 some community pharmacies can vaccinate children aged 2 to under 18 in a clinical risk group.
• Missed school session: UKHSA says pharmacy catch-up for school-aged children opens from 1 December 2026.

You can book through your GP, the NHS App or online via the NHS. The NHS gives a deadline of 31 March 2027, but UKHSA notes that flu usually peaks in December and January, so earlier is better.

Why it matters if you have a baby or are pregnant

Babies can't have the flu vaccine themselves in the first months, so protection from the people around them counts. The NHS recommends the flu jab for all pregnant women, which also passes some protection to the baby; our flu and whooping cough in pregnancy guide explains when to book. For the wider picture of your child's routine jabs, see the first-year UK vaccination schedule.

Quick checklist before the appointment

• Check your child's age on 31 August 2026 (2 or 3 means eligible).
• Tell the vaccinator about asthma, allergies, previous reactions to vaccines or a weakened immune system.
• Ask for the gelatine-free injection if you prefer it.
• Rebook if your child has a high temperature on the day.
• Put the date in your phone, and pencil in your own flu jab if you're eligible.

This article is general information based on NHS and UKHSA guidance, not personal medical advice. If you're unsure about eligibility or your child's health, ask your GP, health visitor or pharmacist.