Mae’r Cyd-bwyllgor hefyd wedi cyhoeddi cyngor mewn perthynas â defnyddio’r brechlyn AstraZeneca yr ydym yn ei ddilyn. Maent wedi dweud y canlynol:Dylai'r rhai rhwng 18 a 29 oed heb unrhyw gyflyrau iechyd sy’n bodoli eisoes gael brechlyn COVID-19 amgen pan fo dewis arall ar gaelDylai'r bobl hynny sydd wedi cael dos cyntaf o’r brechlyn AstraZeneca barhau i gael yr ail ddosDylid rhoi gwybodaeth i unigolion sy'n cael cynnig brechiad a dylai gweithwyr gofal iechyd proffesiynol fod â’r wybodaeth ddiweddaraf i adlewyrchu'r ystyriaethau hyn
JCVI has also issued advice in relation to AstraZeneca deployment that we are following. They have advised that:Those aged 18-29 with no underlying conditions should receive an alternative COVID-19 vaccine where an alternative is available.Those people who have had a first AstraZeneca vaccine dose should continue to have the second dose.Information should be given to individuals offered vaccination and healthcare professionals should be updated to reflect these considerations.