Actions in response to the outbreak have taken into consideration evidence-based approaches and lessons learned from previous measles outbreaks in Wales and elsewhere.
Mae’r camau gweithredu sy’n ymateb i’r achosion hyn wedi rhoi ystyriaeth i ddulliau sy’n seiliedig ar dystiolaeth ac i wersi a ddysgwyd o achosion blaenorol o’r frech goch yng Nghymru a mannau eraill.