Mae Prif Swyddog Meddygol Cymru wedi croesawu’r newyddion y gallai brechlyn COVID-19 fod yn barod eleni, ond mae wedi rhybuddio “mai dyddiau cynnar iawn yw’r rhain”.
The Chief Medical Officer for Wales has welcomed the news that a COVID-19 vaccine could be ready this year but has warned “that these are very early days”.