30-year-old mother-of-three identified as Sydney's latest COVID death.

Ianeta Isaako has been named on social media as the woman in her 30s who died at her home in Emerton on Monday with COVID-19.

She is the 75th death in NSW since the most recent COVID-19 outbreak started in June. Her husband is still in hospital with the virus.

The Daily Telegraph reports the 30-year-old was found unresponsive at her home in western Sydney, about 3pm on Monday just days after she had tested positive to the virus. She could not be resuscitated.

Her condition deteriorated quickly and she could not be resuscitated. https://t.co/YWo2EiP34X

— The Daily Telegraph (@dailytelegraph)

"They were a nice young family, you'd always see them playing out the front with their kids," one neighbour told the publication.

There were no COVID-related deaths reported by NSW Health on Tuesday morning's update, with Isaako's passing to be included in Wednesday's update.

Sydney's 'yellow emergency' as hospital beds fill up.

One of Sydney's largest hospitals has called a "yellow emergency" as it struggles under the weight of growing COVID-19 cases in the city's west.

The Western Sydney Local Health District's executive team sent an email to staff on Tuesday indicating the change in settings at Westmead Hospital.

#BREAKING: Westmead Hospital in Sydney has been forced into "emergency operations", reducing COVID-19 arrivals and shifting critical patients to other facilities. DETAILS: https://t.co/A3vY3BbMeJ #COVID19 #9News pic.twitter.com/87FINdlXnt

— 9News Sydney (@9NewsSyd)

The email said the hospital was "standing up an emergency operations centre" to grapple with the increase in COVID-19 cases at the facility.

The hospital would immediately reduce ambulance arrivals for COVID-19 patients for a 24-hour period, seek to transfer several critical patients to other Sydney metropolitan hospitals and conduct urgent critical care reviews.

NSW Health data shows almost 4000 COVID-19 cases have been uncovered in the past four weeks in the Western Sydney LHD.

There are currently more than 600 people with COVID-19 in hospital in NSW and 107 in intensive care.

NSW Health says it currently manages about 500 intensive care beds but has a surge capacity of about 2000 when required. The government has repeatedly said the hospital system is coping with the increased workload.

Blacktown Hospital yesterday: 11 ambulances stuck waiting outside, 3 of them for 4+ hours. Paramedics were asked to park on the road due to a lack of space in ambulance bays. Meanwhile, 9 cars were stuck at Westmead Hospital—one for 6+ hours pic.twitter.com/o4Oo4eYuK2

— APA NSW (@APANSWOFFICIAL)

Nepean Hospital last night: staff wrapped in hospital bedsheets (not even blankets) to stay warm during long waits outside ED. Temperatures are dropping, and today it’s even snowing in the mountains. How long will NSW Health continue to leave essential frontline staff exposed? pic.twitter.com/dRtXHq1rsE

— APA NSW (@APANSWOFFICIAL)

Meanwhile, NSW has crashed through the 60 per cent one-shot vaccination rate and enjoyed a slight dip in daily cases.

But Chief Health Officer Kerry Chant has reminded the public "we are here for the long haul" while pressing vaccination equity so vulnerable communities are protected.

The state reported 753 new local COVID-19 cases on Tuesday, down on the three-day average of 824.

Attention on Tuesday turned to the relaxation of some restrictions for vaccinated people after the six millionth jab was administered.

Premier Gladys Berejiklian said she was "deeply grateful" for increasingly vaccination rates and promised to restore some freedoms by week's end to the 2.1 million people who are fully vaccinated.

But she declined to detail what the changes could be, or how they'll be applied.

Business NSW chief executive Daniel Hunter suggested the government consider easing restrictions on outdoor dining or retail in specific areas.

Pfizer-hungry young Vics eye vax bookings.

Young Victorians are expected to flood the state's COVID-19 vaccination website as Pfizer bookings become available for all those aged 16 to 39.

From Wednesday, Pfizer eligibility expands to people aged 16 to 39 across Victoria's 55 vaccination hubs as supply ramps up courtesy of 175,000 Poland-imported doses.

Premier Daniel Andrews said more than 830,000 vaccination bookings over the next four weeks will be made available from 7am on Wednesday, including 450,000 first-dose Pfizer appointments.

Users reported the state's vaccination booking system momentarily crashed after the announcement, but then came back online.

As of 7am, 16 to 59 year olds became eligible for the Pfizer jab in Victoria. I opened the booking portal at 6:57 and was put in a queue due to “high demand”. Just shows the interest from young people to get vaccinated #COVID19Vic #pfizer @abcmelbourne pic.twitter.com/BEINIYEZ96

— Erin Cooper (@ErinCooper27)

Those aged 18 to 39 who have already made a first dose AstraZeneca appointment will be given the option to instead receive the Pfizer jab, while 16- to 17-year-olds will strictly receive the latter.

Victoria recorded 50 new coronavirus cases on Tuesday, of which 39 were infectious in the community and 10 are yet to be linked.

Seven of the new infections live in Shepparton, about 180 kilometres north of Melbourne, bringing the total outbreak there to 44 cases. That cluster has been genomically linked to an earlier outbreak in the Melbourne suburb of Glenroy.

Vaccine target leaves potential for spread.

A leading epidemiologist says lockdowns and other health measures will still be needed once Australia gets beyond a 70 per cent COVID-19 vaccination rate.

Prime Minister Scott Morrison has warned ongoing lockdowns will cause more harm than benefit when the 70 per cent vaccination benchmark set out in the national plan is reached.

He insists high case numbers will not derail a national plan despite some states warning Doherty Institute modelling needs more work.

Under the agreement, lockdowns will be less likely at 70 per cent and become highly targeted at 80 per cent.

Mr Morrison said negative economic and mental health impacts would outweigh benefits when 70 and 80 per cent immunisation coverage is reached.

"The Australian people want to see it happen" Prime Minister @ScottMorrisonMP challenges premiers to stick to the plan to reopen at 70 and 80 per cent vaccination rates, saying "we've got to get out of the cave.” pic.twitter.com/sLDg1PX2u8

— Sunrise (@sunriseon7)

"That's the advice, that's the basis for the plan. We've all signed up to it, we need to get on with it," he told the Seven Network.

Epidemiologist Mary Louise McLaws said even at 70 per cent of over-16s being vaccinated, it still left 4.8 million under-16s and 6.2 million unvaccinated adults spreading the virus in the community.

She said even at an 80 per cent rate there would be nine million unvaccinated Australians.

The Doherty Institute will provide updated advice to national cabinet on Friday.

In a statement, the Doherty Institute said opening up at hundreds of cases nationally a day would be possible at 70 per cent vaccination coverage.

"However, we will need vigilant public health interventions with higher case loads," it said.

ACT COVID-19 outbreak grows to 167 cases.

Canberra's coronavirus outbreak has grown to 167 cases, with hospital and disability support workers among the latest infections.

An unvaccinated woman aged in her 40s is in intensive care requiring breathing support, while three other patients remain in hospital.

A University of Canberra Hospital worker involved in food preparation was among 30 new cases reported on Tuesday.

The risk of infection to clinical staff and patients is considered to be low, but more than a dozen food preparation workers are in quarantin