82% of children living in Flying Start areas were fully immunised by their 4th birthday (2017-18), no percentage change since 2016-17.
Roedd 82% o blant a oedd yn byw mewn ardaloedd Dechrau'n Deg wedi cael eu himiwneiddio'n llawn erbyn eu 4ydd pen-blwydd (2017-18), dim newid canrannol ers 2016-17.