"I wneud hynny mae angen help pawb arnom. Mae hynny'n golygu cadw'n wyliadwrus am arwyddion o’r haint; ynysu os oes gennym symptomau a threfnu i gael prawf.
“To do that we need everyone’s help. That means staying vigilant for signs of infection; isolating if we have symptoms and arranging to get tested.