Six new cases of COVID-19 have been recorded in NSW in the 24 hours to 8pm on Monday, bringing the state's total to 2968.

One more case has been recorded at the Anglicare Newmarch House aged care facility in the western Sydney suburb of Caddens, where a cluster of cases has emerged.

It brings the total number of cases at the facility to 42 – 14 staff and 28 residents. Two residents have died after contracting coronavirus at the aged care home.

NSW Chief Health Officer Dr Kerry Chant said there were 249 COVID-19 cases being treated by NSW Health including 21 people being treated in intensive care units, 17 of whom required ventilators.