Mae rhagor na 1.75m o bobl – dwy ran o dair o’r boblogaeth 12 oed a throsodd – wedi cael y pigiad atgyfnerthu neu drydydd dos o frechlyn Covid-19.
More than 1.75m people – two-thirds of people aged 12 and over – have received a booster or third dose of the Covid-19 vaccine.