Omicron bellach yw'r ffurf amlycaf ar y feirws yng Nghymru ac mae nifer yr achosion yn codi'n sydyn. Mae nifer yr achosion yn llawer uwch nawr nag yr oeddent pan oedd y tonnau blaenorol ar eu hanterth. Mae'r cyfraddau ar eu huchaf ymhlith pobl ifanc 20 i 40 oed, ond rydym hefyd yn gweld cynnydd mewn grwpiau oedran hŷn. Mae'r ffigurau diweddaraf yn dangos bod mwy na 2,200 o achosion fesul bob 100,000 o bobl ledled Cymru, sy’n cyfateb i tua un person ym mhob 20. Mae hyn yn cyd-fynd â'n gwaith modelu.
Omicron is now the dominant form of the virus in Wales and cases are rising sharply. Cases are far higher now than they were at the peak of the previous waves. Rates are highest among 20 to 40-year-olds, but we are also seeing rises in older age groups. The latest figures show there are more than 2,200 cases per 100,000 people across Wales. This equates to approximately one person in every 20. This is in line with our modelling.