Bob blwyddyn, mae GIG Cymru yn ymdrechu i gynyddu'r amddiffyniad yn erbyn ffliw tymhorol i'r rheini yr argymhellir eu bod yn cael eu brechu rhag y ffliw. Yn ystod tymor ffliw 2017-18, cafodd ychydig dros 58,000 yn fwy o bobl mewn grwpiau risg eu brechu nag yn ystod y tymor blaenorol. Gwelwyd cynnydd o 5% yn nifer y plant 2 a 3 oed a gafodd eu brechu, a chafodd blwyddyn ychwanegol o blant ysgol gynradd (8 oed) ei chynnwys yn y rhaglen.
Every year NHS Wales strives to increase the level of protection against seasonal influenza (flu) for those who are recommended to have the flu vaccine. During the 2017-18 flu season, just over 58,000 more people in at risk groups were vaccinated than in the previous season. Vaccination of children aged 2 and 3 years increased by 5% and an additional primary school year (children aged 8) was included in the programme.