In January 2021, 221,849 patient pathways (41.0% of all patient pathways waiting to start treatment) had been waiting more than 36 weeks from the date the referral letter was received by the hospital.
Ar 31 Awst 2021, roedd gan Gymru 18,548 o achosion a gadarnhawyd o'r amrywiolyn amlycaf Delta (cynnydd o 2,096 o'r wythnos flaenorol).