Victoria has suffered its deadliest day in the coronavirus pandemic with 19 deaths and 322 new cases.
The figure takes the state's death toll to 229 and the national total to 314.
Fourteen of the 19 deaths were residents in aged care. The people who died were one man in his 50s, one woman in her 60s, two men in their 70s, one man and six women in their 80s, and one male and seven women in their 90s.
Victoria currently has 7,869 active coronavirus cases, including 1,065 among healthcare workers.
The Australian Medical Association has said it is 'extremely concerned' after 590 healthcare workers contracted the virus over the past 14 days.
Premier Daniel Andrews said the daily case totals appeared to be decreasing as a result of lockdowns and compulsory mask wearing.
Airline passengers off a Qantas domestic flight from Melbourne make their way to coaches headed for hotel quarantine at Sydney International Airport
A man is detained by Victoria Police on Sunday after protesters demonstrated against lockdown
'We're certainly seeing perhaps some greater stability that is a result of the cumulative impact of stage three,' he said.
But he warned Victorians 'not to get ahead of ourselves' and to keep following lockdown rules.
In his daily press conference Mr Andrews showed two videos of COVID-19 survivors who had lasting health impacts, including a middle-aged woman who needed a breathing tube for a month.
'Think about the person who is most important to you. And then think about them with a tube to help them breathe in intensive care for 32 days. That's how serious this is,' he said.
Normally busy shopping centres in Melbourne were empty on Sunday
A woman walks down the street during an anti-lockdown protest in Melbourne on Sunday
Victoria is rolling out a free call-to-test program which will allow a vulnerable person to summon a tester to their home within 48 hours by calling a hotline if they want a COVID-19 test.
'We will go to people's homes and we will ensure that they will be able to be tested within a 48-hour period,' Health Minister Jenny Mikakos said.
'This is designed to ensure that approximately 200 vulnerable Victorians every day will have access to this new testing capacity.'
On Sunday Australia's Deputy Chief Medical Officer Nick Coatsworth said Victoria seems have passed the peak of the outbreak after recording 725 new cases on August 5.
'It appears we're in the plateau but we're looking for the inflection point that tells Victorians that their efforts are being rewarded,' he said.
'We haven't seen that yet but I have no doubt that we will see it. If you consider that stage three restrictions had us almost at a plateau, then the stage four restrictions will produce a result.'
New daily case numbers in Victoria have been stuck around 500 for the past seven days, falling to 394 new cases on Sunday with 17 new deaths.
Dr Coatsworth said the pandemic was challenging as you 'never really know where you are on the curve'.
The rate at which the virus spreads is called the 'reproductive number' or R-0.
Victoria has suffered a record 19 deaths and 322 cases of coronavirus
Hari Krishnas cheerfully singing on the St Kilda foreshore on Sunday. Experts have taken heart that Victoria's daily new infection rate appears to be dropping
This graph shows Victoria's coronavirus infection rate appears to be falling from a peak of 725 cases on Wednesday 5 August
A family frolicks in a St Kilda park in Melbourne on Sunday as new case numbers fall
If the R-0 is at one, then R-1 means that every person with the virus spreads it to one other person.
Numbers above R-1 mean a virus will spread exponentially, but if the reproductive number falls below one then the virus will slowly fizzle out.
COVID-19 has a natural median reproductive number of R-5.7, according to a study published in the journal Emerging Infectious Diseases, which explains why it exploded all over Victoria.
Victoria's outbreak now has a basic reproductive number of R-1 - or just below one, Dr Coatsworth said on Sunday.
'The ideal situation would be if we could see that reproductive number at 0.5,' he said.
'We don't have enough data at the moment from the numbers to see whether that's approaching 0.5, but in the coming days to week we will see that.'
Police issued a total of 276 fines to individuals for breaching the Chief Health Officer directions, including:
• 37 for failing to wear a face covering when leaving home for one of the four approved reasons
• 25 at vehicle checkpoints
• 74 for curfew breaches
• 27 fines issued for those who were travelling to, or attended a protest in the CBD on Sunday.
• A male was observed running across Edgedale Road in Kew overnight. He was stopped by police and stated he was just getting cigarettes, despite being aware of the curfew in place.sonos sonos One (Gen 2) - Voice Controlled Smart Speaker with Amazon Alexa Built-in - Black read more
• A vehicle was located in a carpark in Campbellfield, with four people inside all from different addresses claiming to be just 'hanging out'. All four males were issued with fines.
• After receiving a noise complaint, police