European Centre for Disease Prevention and Control - https://www.ecdc.europa.eu/en/all-topics
NHS Health Conditions A to Z - https://www.nhs.uk/conditions/
NHS Inform Infections and poisoning - https://www.nhsinform.scot/illnesses-and-conditions/infections-and-poisoning/
UK Health Security Agency Green Book - https://www.gov.uk/government/collections/immunisation-against-infectious-disease-the-green-book
UKHSA Routine childhood immunisations schedule - https://www.gov.uk/government/publications/routine-childhood-immunisation-schedule