Yr wythnos hon, bydd Llywodraeth Cymru’n ysgrifennu at y bobl sydd mewn perygl uchel iawn o ddablygu salwch difrifol os cânt eu heintio gan y coronafeirws. Byddant yn cael cynghorion penodol am sut i amddiffyn eu hunain.
This week, the Welsh Government will be writing to those people who are at very high risk of developing a serious illness if exposed to coronavirus with specific advice about how they can protect themselves.