Last updated: 20 July 2026.
Immunity Map is provided for general public information and education. It is an independent project, not an official NHS or UKHSA service.
No medical advice
The site does not provide a diagnosis, individual vaccination record or medical recommendation. Use official NHS advice or speak to a qualified healthcare professional for personal decisions.
Geography and data accuracy
Area figures group aggregate COVER records by the postcode district of the GP practice, not the home postcode of each child. Patients may live outside the district. The figures are provisional, may be revised and must not be treated as resident-population estimates or outbreak predictions.
Small samples
Percentages based on small eligible counts can change sharply. Groups below the published ranking threshold remain available for transparency but are not included in lowest-coverage rankings.
External sources
Check the linked UKHSA release and methodology before using a figure in formal analysis. External websites control their own content and availability.
Licence
Contains UK Health Security Agency data licensed under the Open Government Licence v3.0.