Mae'r Cyd-bwyllgor ar Imiwneiddio a Brechu (JCVI) yn bwyllgor cynghori arbenigol annibynnol. Mae’n cynghori adrannau iechyd y Deyrnas Unedig ar faterion imiwneiddio, gan wneud argymhellion ynghylch amserlenni brechu a diogelwch brechlynnau.
The Joint Committee on Vaccination and Immunisation (JCVI) is an independent expert advisory committee, which advises United Kingdom health departments about immunisation, making recommendations about vaccination schedules and vaccine safety.