chickenpox vaccination is now free on the NHS for eligible children in the UK. From 1 January 2026, the NHS introduced a routine chickenpox immunisation programme for the first time in its history. The new combined MMRV vaccine — protecting against measles, mumps, rubella, and chickenpox — has replaced the old MMR jab as part of the standard childhood vaccination schedule. This is one of the biggest updates to UK childhood immunisation in years, and every parent in Chertsey, Surrey, and across England needs to know what it means for their family.

This guide covers everything: what chickenpox is, who qualifies for the NHS vaccine, the new 2026 schedule explained clearly by date of birth, what to do if your child is not covered, side effects to watch for, and how to book a private chickenpox injection at Chertsey Pharmacy for those not yet covered by the NHS programme.

What Is Chickenpox and Why Does It Matter?

Chickenpox known medically as varicella is a highly contagious viral infection caused by the varicella-zoster virus. It spreads through the air when an infected person coughs or sneezes, and through direct contact with the fluid inside the blisters. Most children will encounter it  roughly half of UK children catch chickenpox by the age of four, and around 90% will have had it by the time they are ten years old.

The classic symptoms appear in stages: a mild fever and general feeling of unwellness for one or two days, followed by a red, itchy rash that turns into fluid-filled blisters across the body. These blisters scab over within five to ten days. Children are contagious from two days before the rash appears until all the spots have fully scabbed.

The 2026 NHS Update: What Has Actually Changed?

This is the news every UK parent should know. From 1 January 2026, the NHS replaced the MMR (measles, mumps, rubella) vaccine with the MMRV vaccine — a combined jab that adds chickenpox protection for the first time. This follows a formal recommendation by the Joint Committee on Vaccination and Immunisation (JCVI) and brings the UK into line with countries like the United States, Germany, Australia, and Canada, which have routinely vaccinated children against chickenpox for years.

The MMRV vaccine has been safely used in other countries for over a decade. It contains weakened (attenuated) forms of the four viruses, which train your child’s immune system to fight them without causing the actual illness. Two doses together provide very strong, long-lasting protection studies show immunity can last 10 to 20 years or more.

How Does the Chickenpox Vaccine Actually Work?

The chickenpox vaccine is a live attenuated vaccine  meaning it contains a weakened, laboratory-modified form of the varicella-zoster virus. This weakened version cannot cause a full chickenpox infection in healthy people, but it is enough to trigger a strong immune response. Your child’s immune system learns to recognise and fight the virus, so if they encounter it in real life, they are protected.

The vaccine used in the NHS programme is called the MMRV vaccine (brand names ProQuad or Priorix-Tetra, depending on availability). For private chickenpox immunisation outside the NHS programme, pharmacies use varicella-only vaccines such as Varivax or Varilrix.

Two doses provide the best protection  studies show two doses protect up to 98% of recipients from catching chickenpox, and those rare cases that do occur after vaccination are typically much milder. Even one dose provides good protection against severe disease.

Who Can Still Get a Private Chickenpox Injection?

Even with the new NHS programme, there are many families for whom private chickenpox vaccination remains the right choice. At Chertsey Pharmacy, we offer private chickenpox immunisation for the following groups:

• Children not covered by the NHS schedule (born before 1 September 2022 who missed natural chickenpox)
• Older children and teenagers who have never had chickenpox
• Adults who have never had chickenpox — particularly important as the disease is more severe in adults
• Women planning a pregnancy (the vaccine should be given at least 4 weeks before conception, as it cannot be given during pregnancy)
• Healthcare workers and carers who are not immune to chickenpox
• Close household contacts of immunocompromised individuals (people undergoing chemotherapy, transplant patients, etc.)
• Travellers heading to countries with high varicella circulation

Private chicken pox injections at Chertsey Pharmacy are available as a two-dose course. The full course gives robust, long-lasting protection.

Like all vaccines, the chickenpox vaccine can cause mild side effects in some people. The vast majority are temporary and resolve within two to three days. It is important to remember that the benefits of vaccination — protection against chickenpox and its potentially serious complications  far outweigh these minor and short-lived effects.

Common Side Effects (Usually Mild and Short-Lived)

• Soreness, redness, or slight swelling at the injection site
• Mild fever  this may appear 6 to 10 days after vaccination
• A blotchy or spotty rash, usually around the injection area may appear 3 to 4 weeks after the jab
• Feeling generally unwell or tired for a day or two
• Mild joint aches (more common with the combined MMRV vaccine)

Rare Side Effects

• Febrile seizures (fever-triggered fits)  uncommon and not dangerous in the long-term
• A mild chickenpox-like rash  if spots appear, keep them covered; your child can still attend nursery as normal while covered
• Severe allergic reaction (anaphylaxis) very rare; our pharmacists are trained to manage this

Note: Side effects are generally less common after the second dose than after the first. The MMRV vaccine does not contain live chickenpox virus in an amount that can cause a real infection. If your child develops a mild rash after vaccination, keep it covered with clothing until it fades.

Who Should Not Have the Chickenpox Vaccine?

The chickenpox vaccine is suitable for most healthy children and adults. However, it is not recommended for:

• Pregnant women (avoid pregnancy for at least 4 weeks after each dose)
• People with a severely weakened immune system due to a medical condition or immunosuppressive treatment
• Anyone who has had a serious allergic reaction (anaphylaxis) to a previous dose or to any ingredient in the vaccine, including gelatine or neomycin
• Children or adults currently unwell with a high temperature (wait until recovered)

If you are unsure whether the vaccine is suitable for you or your child, our pharmacists at Chertsey Pharmacy will carry out a brief consultation before administering any vaccine, to ensure it is safe and appropriate for your individual circumstances.

Chickenpox and Shingles: Understanding the Connection

Many parents are not aware that chickenpox and shingles are caused by the same virus. After a chickenpox infection, the varicella-zoster virus does not leave the body — it lies dormant in the nervous system. In later life, often when the immune system is under stress or weakened by age, the dormant virus can reactivate as shingles (herpes zoster).

Shingles causes a painful, blistering rash — often on one side of the body — and can lead to prolonged nerve pain (post-herpetic neuralgia) that lasts months or even years. Vaccination against chickenpox in childhood may reduce the risk of shingles in later life by preventing the initial infection, though it does not eliminate the risk entirely.

For adults aged 50 and over, a separate shingles vaccine is available. Chertsey Pharmacy offers the shingles vaccination as a private service. Speak to one of our pharmacists or visit our website to find out more.

Frequently Asked Questions About Chickenpox Vaccination

Q: At what age does my child get the chickenpox jab on the NHS?

For children born on or after 1 January 2025, the first dose is given at 12 months and the second at 18 months. For older children within the eligible cohorts, doses are offered at their routine vaccination appointments. Your GP will contact you when your child is due.

Q: My child missed the NHS chickenpox vaccine — what should I do?

Contact your GP surgery first, as they can reschedule missed NHS appointments for eligible children. If your child is outside the NHS eligible cohorts, Chertsey Pharmacy can provide private chicken pox injections without a GP referral. Two doses are required for full protection.

Q: Can adults get the chickenpox vaccine at a pharmacy?

Yes. Chertsey Pharmacy offers private chickenpox vaccination for adults aged 18 to 65 who have never had chickenpox. This is particularly important as chickenpox can be significantly more severe in adults than in children. Two doses are required, given 6 to 8 weeks apart.

Q: Does the chickenpox vaccine cause chickenpox?

No. The vaccine contains a weakened form of the varicella-zoster virus that cannot cause a full chickenpox infection. In rare cases, a mild spotty rash may appear near the injection site a few weeks after vaccination — this is a minor immune response, not chickenpox, and is not contagious as long as the spots are covered.

Q: Can my child have the chickenpox jab and other vaccines at the same time?

Yes. The MMRV vaccine can be given at the same time as other routine childhood vaccinations. For private varicella vaccines (Varivax or Varilrix), it is generally recommended that if not given on the same day as MMR, there should be at least a 4-week gap between the two. Our pharmacists will advise you at your consultation.

Q: How long does chickenpox immunity last after vaccination?

Studies show that immunity from the chickenpox vaccine lasts at least 10 to 15 years, and evidence suggests it may last significantly longer — potentially for life. There is currently no recommendation for booster doses after a full two-dose course.

Q: Is the chickenpox vaccine safe during pregnancy?

No. The chickenpox vaccine is not suitable during pregnancy as it is a live vaccine. If you are planning a pregnancy and have never had chickenpox, speak to your GP or pharmacist about getting vaccinated beforehand. You must wait at least 4 weeks after each dose before trying to conceive.

Q: My child has already had chickenpox naturally — do they still need the vaccine?

Children who have already had chickenpox disease generally have natural immunity and do not need the vaccine. However, there are no safety concerns with vaccinating a child who has previously had chickenpox — if you are unsure of your child’s history, it is safe to proceed with the vaccine.

Book Your Chickenpox Vaccination at Chertsey Pharmacy

Private chickenpox immunisation is available for children (from 9 months) and adults (up to 65 years) at Chertsey Pharmacy. Walk-in or book online.