This is the second year the programme has been extended, which means that more than 1.5m people in Wales will be eligible for a free vaccine again this year.
Dyma’r ail flwyddyn y mae’r rhaglen wedi cael ei hymestyn, sy’n golygu y bydd dros 1.5m o bobl yng Nghymru yn gymwys i gael brechlyn am ddim eto eleni.