Pa asesiad y mae Llywodraeth Cymru wedi'i wneud o gyfran y cysylltiadau o achosion Covid-19 y mae angen eu holrhain er mwyn rheoli'r feirws yn llwyddiannus?
Wedi'i ateb gan Prif Weinidog | Wedi'i ateb ar 10/06/2020
There is no single percentage which can cover all cases. The percentage of identified contacts of a positive case in a residential care home, for example, is likely to be higher than cases in the community. In general, however, the more cases that are identified and their contacts traced, the more R is driven down. Our assessment is drawn from international evidence and advice from SAGE, NERVTAG. Our own TAG strongly supports the view that the proportion should be as high as possible.