Wrth inni ddysgu mwy am effeithiau COVID-19 a'i effeithiau ar y rhai sydd â chyflyrau iechyd, mae Prif Swyddogion Meddygol ledled y DU wedi bod yn cadw golwg ar bwy maent yn gofyn iddynt warchod eu hunain ar sail bod yn agored i niwed yn glinigol. Yn ddiweddar, mae'r Coleg Brenhinol Pediatreg ac Iechyd Plant (RCPCH) wedi cyhoeddi canllawiau ar Warchod Plant a Phobl Ifanc ac, ar ôl ystyried y rhain, mae'r canllawiau hyn wedi'u mabwysiadu gan Brif Swyddogion Meddygol pedair gwlad y DU.
As we learn more about the effects of COVID 19 and its impacts on those with existing health conditions, Chief Medical Officers across the UK have been keeping under review who they are asking to shield on the basis of clinical vulnerability. The Royal College of Paediatrics and Child Health (RCPCH) has recently published guidance on Shielding for Children and Young people and after consideration, this guidance has been adopted by the Chief Medical Officers of the 4 UK nations.