Mae’r cynllun wedi’i ddiweddaru yn sefydlu pedair lefel rhybudd, sy'n cyd-fynd â'r mesurau y bydd angen inni eu rhoi ar waith i reoli lledaeniad y feirws yn ystod cyfnod anodd y gaeaf ac i ddiogelu iechyd pobl.
The revised plan puts in place four alert levels, aligned to the measures we will need to have in place to control the spread of the virus through the difficult winter months ahead of us and to protect people’s health.