The Minister for Health and Social Services has agreed for the extension of phase one of the Office of National Statistics (ONS) Covid-19 infection study to Wales.
Mae’r Gweinidog Iechyd a Gwasanaethau Cymdeithasol wedi cytuno i ymestyn cam cyntaf astudiaeth y Swyddfa Ystadegau Gwladol o’r haint Covid-19 i Gymru.