Lansiwyd Rhaglen Frechu'r Gaeaf yn erbyn Feirysau Anadlol ar 11 Medi 2023 ac mae'n cynnig brechlynnau COVID-19 a'r ffliw am ddim i bobl dros 65 oed a phobl ieuengach sy'n agored i niwed yn glinigol.
The Winter Respiratory Vaccination Programme was launched on 11 September 2023 and offers free COVID-19 and flu vaccines to people who are over 65 and younger people with clinical vulnerabilities.