Gofynnir i gysylltiadau agos gael prawf wrth iddynt ddechrau eu cyfnod o hunanynysu ac unwaith eto ar ddiwrnod wyth. Os byddwch chi’n cael eich enwi fel cyswllt bydd dal angen i chi hunanynysu am y 10 diwrnod llawn hyd yn oed os bydd canlyniad y prawf yn negatif – gall gymryd hyd at 10 diwrnod neu ragor i symptomau ddatblygu, neu i'r feirws ymddangos yn eich system.
Close contacts will be asked to take a test as they start their self-isolation period and again on day eight. If you are identified as a contact you will still need to isolate for the full 10 days even if the test comes back negative as it can take up to 10 days or more for symptoms to develop, or for the virus to appear in your system.