There will be a small amount of overlap in the reporting from the national digital system and the early reporting provided by local and regional contact tracing teams.
Bydd rhywfaint o orgyffwrdd yn y ffigurau a nodir o'r system ddigidol genedlaethol a'r adroddiadau cynnar a ddarparwyd gan dimau olrhain cysylltiadau lleol a rhanbarthol.