New South Wales has recorded 415 new local cases of Covid-19 and four new deaths.
The new deaths take the death toll in the latest outbreak to 48 and include a woman in her 50s, a woman in her 70s, a woman in her 80s and a man in his 80s.
Of the new cases, 42 cases were infectious in the community, and the isolation status of 273 cases remains under investigation.
There have now been 7,745 cases linked to the latest Sydney outbreak since it began in mid-June.
NSW's pandemic response was at a fork in the road, chief medical officer Dr Kerry Chant said.
"We have to decide what path we will choose," she said. "The path I want is one where I see declining case numbers and increasing vaccination uptake."
NSW suffered its worst day of the pandemic yesterday with 466 local cases and four deaths, prompting Premier Gladys Berejiklian to unveil a police operation to enforce lockdown compliance across Sydney.
The entire state was later plunged into a seven-day lockdown, which was announced suddenly via social media, giving regional residents little time to prepare and sparking fury online. All 7.95 million NSW residents in are now in lockdown.
Under the stay-at-home orders across the state, anyone who leaves their home will need to have a reasonable excuse. They also cannot have visitors in their home from outside their household. All hospitality venues are closed to the public. Most retail premises are required to close.
People who leave their home are required to carry a mask with them at all times. They must be worn when working outdoors, by all school staff, by all people in outdoor markets, outdoor shopping strips, and in an outdoor queues.
The lockdown compliance operation will see police and Australian Defence Force officers enforce the state's restrictions after officials blamed rule-breaking for the continued growth of the outbreak.
NSW now has 1400 Highway Patrol officers across the state working solely on enforcing compliance. Drivers have been told to expect more roadblocks, where police will be checking identification and proof of address.
"These are some of the strongest laws, with some of the strongest police action coming. I am not apologetic," NSW Police Commissioner Mick Fuller said on Saturday.
"Please don't write in and complain to me. We have given ample warnings and cautions, and that time has gone."
According to Fuller, movement within the Greater Sydney region still remains too high, and "getting compliance from some members of the community" has been difficult.
In reminding residents of the lockdown rules and the harsh new fines for breaching state health orders, Berejiklian said "the buck stops with me".
"For a long time, nearly a year and a half, we were different to the rest of the world," she said.
"And now, we are not different from the rest of the world. The Delta strain is diabolical, and we have to accept and be real about that."
More than 3,290 Covid-19 tests were conducted in the ACT yesterday, including at a pop-up centre at a local school, prompted by a 14-year-old student who tested positive.
The ACT lockdown, like Melbourne's, is scheduled to end on Thursday.
ACT has not faced a lockdown since April last year. Photo / Mike Scott
Queensland
Queensland has recorded no new locally acquired Covid-19 cases on Sunday as the state continues to recover from the Indooroopilly cluster.
Premier Annastacia Palaszczuk said it was an "absolutely perfect way to start a Sunday" but warned their could still be cases emerge from the Indooroopilly school cluster.
"We are not out of the woods yet so if you have any symptoms, however mild, please go and get a test, that is absolutely critical," she said.
Zero new local cases overnight. Well done, Queensland 💪
Keep wearing masks, get tested if you have any symptoms, and get vaccinated when you can.
