Jeremy Miles MS, Cabinet Secretary for Health and Social Services
On 14 November 2023, the Joint Committee on Vaccination and Immunisation (JCVI) recommended a universal varicella vaccination programme should be introduced as part of the childhood immunisation schedule.
Varicella – commonly known as chickenpox – is a highly-contagious infectious disease caused by the varicella zoster virus. The virus is very common and affects most children, although it can be caught for the first time at any age.
Most varicella cases in children are relatively mild and the illness resolves without any need for treatment from a medical professional. However, some children can develop complications, such as bacterial infection or skin lesions, including group A streptococcus, and in rare cases, encephalitis, pneumonitis and stroke. These complications can result in hospitalisation and, on rare occasions, death.
In its advice, the JCVI indicated the vaccination should be offered in a two-dose programme at 12 and 18 months of age using the combined MMRV (measles, mumps, rubella and varicella) vaccine. There is evidence from other countries that vaccination can decrease the number of cases of varicella and prevent severe cases and other serious complications.
I have accepted the JCVI’s advice, which includes the routine programme and a catch-up for older children up to six-years-old to prevent a gap in immunity. NHS Wales organisations will now confirm planning assumptions for the introduction of the new vaccination programme in Wales.
The introduction of the varicella programme will align with the planned childhood immunisation schedule changes in January 2026, which is when the new 18-month varicella vaccination appointment will be introduced.
Vaccinations are the most effective way to prevent many infectious diseases, providing protection for individuals and wider protection for their communities. The introduction of new vaccination programmes gives us hope that disease and infection can be further reduced, both protecting our citizens and reducing pressure on our health service.
This statement is being issued during recess to keep members informed. Should members wish me to make a further statement or to answer questions on this when the Senedd returns I would be happy to do so.