With Greater Sydney in lockdown for at least another four weeks, NSW Premier Gladys Berejiklian said there were still 70 people infectious in the community.

She warned transmissions were still occurring in workplaces, households and in health settings.

"Based on those numbers we can only assume things are going to get worse before they get better," she said.

"We cannot continue to see the transmissions continue in these settings."

She warned of a stronger police presence and higher penalties for those who are not following the public health order rules.

"Police will also be given the power to close a public premise, worksite or business if they continue to flout the rules," she said.

There were 111,000 people tested in the 24 hours to 8pm on Wednesday.

"We are making it easier for people to get vaccinated. Please come forward for vaccination," Ms Berejiklian said.

"It is our way forward out of this."

Two more people have died with COVID-related illness.

Both were not vaccinated, and both were household contacts of a confirmed case.

Dr Kerry Chant said we were likely to see more deaths.

"Sadly, 25 per cent of people over 70 are still to receive their first dose," she said.

"COVID will kill. Please get vaccinated."

There are currently 182 in hospital with COVID-19. Of those, 54 are in ICU, and 22 require ventilation.

"Many of the cases are young, two are in their teens," Dr Chant said.

"It's not only an old person's disease.

"Get vaccinated.

"We cannot live with the Delta strain with the current level of vaccination.

"We have got to break this cycle.

"We have got to turn this around."

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