Contact transfer points inside a care home could be identified with environmental surveillance and testing, to show which surfaces or areas had high levels of viable coronavirus.
Gellid nodi pwyntiau trosglwyddo cyswllt y tu mewn i gartref gofal gyda gwyliadwriaeth a phrofi amgylcheddol, i ddangos pa arwynebau neu ardaloedd sydd â lefelau uchel o goronafeirws hyfyw.