Introduction of the MMRV vaccine for children

Posted by: karenbarron2 - Posted on:

The MMRV vaccine is a combined shot protecting against Measles, Mumps, Rubella, and Varicella (chickenpox), replacing the older MMR vaccine in the UK’s routine childhood schedule starting January 2026 to offer better convenience and protection, especially against chickenpox, with common side effects including fever, redness, or rash, and it’s given in two doses, usually at 12 months and 18 months.  

What it protects against

  • Measles: Can cause pneumonia, brain inflammation (encephalitis).
  • Mumps: Can lead to meningitis.
  • Rubella: Dangerous for unborn babies if a pregnant person gets it.
  • Varicella (Chickenpox): Can cause skin infections, pneumonia, or brain inflammation. 

Schedule (UK, from Jan 2026)

  • First Dose: Around 12 months old.
  • Second Dose: At the new 18-month appointment.
  • Older Children: May receive it in catch-up programs. 

Common side effects

  • Fever
  • Pain, redness, or swelling at the injection site
  • Irritability
  • Rash
  • Diarrhoea or vomiting 

Key benefits

  • Provides protection against four diseases with fewer injections. 
  • Reduces severe cases and hospitalizations from chickenpox, similar to countries that already vaccinate for it. 

Who should get it

  • Children as part of routine immunisation.
  • Children with weakened immune systems generally should not receive live vaccines like MMRV.