Mae’r Cyd-bwyllgor ar Imiwneiddio a Brechu (JCVI) yn bwyllgor annibynnol sy’n rhoi cyngor arbenigol, ac mae’n cynghori adrannau iechyd y Deyrnas Unedig ar imiwneiddio, gan wneud argymhellion am ddiogelwch brechlynnau ac amserlenni brechu.
The Joint Committee on Vaccination and Immunisation (JCVI) is anindependent expert advisory committee, which advises United Kingdom health departments aboutimmunisation, making recommendations aboutvaccination schedulesandvaccinesafety.