Australia Covid live news update: NSW sends Muswellbrook and Port Macquarie into lockdown; new Qld restrictions after four local cases

9.30am BST

One interesting snippet from the Victorian Covid-19 update that was just released: there's been sewage detections across regional parts of the state, including Cobram, Philip Island, Seymour, Ballarat North and Bendigo.

9.01am BST

AAP reports that Victorians calling paramedics with emergencies are already facing troubling delays, weeks out from when demand on the state's health system is expected to peak.

The story touches on this footage, which appears to show ambulances ramping outside the Northern hospital in the Melbourne suburb of Epping.

If you think the restrictions or getting vaccinated is hard, imagine being a patient or a HCW turning up to hospital and seeing this. This is what we are facing in parts of Melbourne at present. #COVID19Vic https://t.co/B9DFwtQrXR

Victorians calling triple zero are facing unacceptable delays" while ambulance ramping has been seen outside a Melbourne hospital, as the state's health system struggles to keep on top of demand.

In a video posted to social media on Monday night, dozens of ambulances can be seen waiting outside Melbourne's Northern hospital.