Daw hyn wrth i’r Prif Swyddog Meddygol rybuddio, yn ei lythyr blynyddol am y ffliw, y gallai’r ffliw a COVID-19 fod ar led yr un pryd y gaeaf hwn, yn ogystal â heintiau anadlol eraill.
It comes amid warnings from the Chief Medical Officer in his annual flu letter that there could be a co-circulation of flu and COVID-19 this winter, as well as other respiratory infections.