It now seems unlikely that NSW – and maybe even Victoria – will be able to suppress COVID down to zero before any vaccination target is reached.

The state-run centres include three new drive-through vaccination sites, at the Former Ford Factory in Broadmeadows, at Sandown Racecourse in Springvale and at the Eagle Stadium in Werribee.

Health Authorities are strongly recommending that primary school-aged children, when they are not at home, also wear a mask as an extra precaution against this virus.

While the restrictions commence from 11.59 pm tonight, Premier is asking people to respect the curfew from 9 pm.

The areas of concern are Melton and Caroline springs suburbs where new cases have been identified with mystery sources.

Health experts are of the view it will be very difficult for the Premier to ease any restrictions in Melbourne metro.

New restrictions will be introduced for the Tamworth Local Government Area, from 5 pm today until 12.01 am Tuesday 17 August.

Regional Victorians will be able to leave their homes for any reason and there will be no limit on the distance travelled from home.

"It was very confronting as the heated arguments broke when many people, who were waiting for hours, were asked to leave."

Premier Daniel Andrews said he can't say if the lockdown will be lifted as per schedule on Thursday.