Scott Morrison says a coronavirus vaccine won't be rolled out across Australia until he's so satisfied it is safe that he would give it to his own kids

Scott Morrison insists a coronavirus vaccine will not be rolled out to Australians unless it's safe enough for his own children.

The prime minister on Sunday night talked up Australia's deals worth $3.5billion to buy and produce millions of doses of four vaccines if they are approved by regulators.

'All the four vaccines we've invested in are proving to be on track and were looking to have them distributed in the first quarter of next year,' he told 60 Minutes. 

The Australian leader though said no vaccine would be distributed around Australia until authorities are 100 per cent certain it is safe for the public to use.

A chemist is pictured at AstraZeneca's headquarters in Sydney on August 19. Prime Minister Scott Morrison has insisted a coronavirus vaccine will not be rolled out to Australians unless it's completely safe

The Australian leader said on Sunday night no vaccine would be distributed around Australia until authorities can be 100 per cent certain it is safe

'I want to assure Australians about the vaccines that are made available to them - they must be safe.

'There will be no compromises on safety and on health.

'That vaccine has to be good enough for my family to be good enough for everyone else and their families too.'

Mr Morrison previously said vulnerable and front line workers will be the first to receive the vaccine as soon as one is deemed to be safe. 

The first doses are expected to arrive on December 28, but a decision on approval by the Therapeutic Goods Administration will take until late January.

He earlier this week revealed Australians who refuse to get a vaccine could be forced to quarantine for two weeks when they enter the country unless they have a 'genuine medical reason' not to get the jab.

The prime minister previously said a vaccine, which is expected to roll out in March, will be optional but the government will find ways to encourage people to take it. 

 Pictured: Vials reading 'COVID-19'. Australians have been told they could be forced to quarantine for two weeks when they enter the country

Mr Morrison's comments came as the resumption of wild animal wet markets in Asia sparked a dire warning they could spark more pandemics across the globe.  

Covid-19 is believed to have originated and spread from animals to humans at a marketplace in Wuhan, in China's Hubei province

Environmental investigator Steven Galster went undercover in Bangkok's Chatuchak wildlife market in a 60 Minutes expose in March - claiming the filthy conditions had the potential to spark a 'second Wuhan'. 

The covert footage showed cramped cages full of blue-tongued lizards, iguanas, monkeys, Australian cockatoos, African meerkats, ferrets, rare tortoises, porcupines, snakes and skunks, among others. 

Environmental investigator Steven Galster's covert footage in March showed cramped cages full of blue-tongued lizards, iguanas, monkeys, cockatoos, African meerkats, ferrets, rare tortoises, porcupines, snakes, skunks and other animals

Pictured: Bangkok's Chatuchak wildlife market has the potential to spark a 'second Wuhan', Mr Galster warned

On Sunday night, the anti-animal trafficking expert said the reopening of the market in the months since could spark another pandemic.  

'We need to ban the commercial trade of wild animals just the same way we banned slavery,' Mr Galster said.

'That's the point of history we're at right now - if we don't do that we're definitely going to have a pandemic and it could be much worse than this one.

'We were successful in closing it down but unfortunately they've re-opened.'   

Mr Galster has said in March animals lumped together in wet markets that are not normally in close contact in the wild are particularly vulnerable to viruses.

While being kept in squalid conditions at the markets, those viruses can leap to humans who handle them.  

Environmental investigator and human rights campaigner Steven Galster believes Chatuchak illegla wildlife market in Bangkok is 'Wuhan in the making'

Mr Galster said he believed Chatuchak was a 'Wuhan in the making'.

'It's a prescription for disaster, all within this small, hot room ready to infect somebody,' he said.

Mr Galster said not just Chinese wildlife markets should be shut down, but also illegal trading hubs in Indonesia, Laos, Cambodia and Burma. 

The virus is suspected to have crossed to humans from the pangolin - a type of scaly anteater - which is the most trafficked wild animal in the world.

Alarming undercover footage revealed how overseas food markets are still selling 'high-risk' wildlife

'It's a wild animal that's been taken out of its natural environment, consumed in some way, come into contact with people in an unnatural way,' Mr Galster said.

'I think the pangolin… whose only defence is to curl up into a ball, has decided that conservationists weren't doing enough, it struck back itself.

'I think this is mother nature's revenge. We're not surprised. We've been working on this for years, and we're trying to warn people that this is global. 

'There are sleeping time bombs across the region right now.'

What is the origin of the coronavirus? 

Bats are said to be the origin of  Covid-19

Coronavirus, or SARS-CoV-2, first jumped to humans from bats, genetic evidence has confirmed.

Research published in The Lancet said bats were the 'most probably' original host of the virus, after analysing samples taken from the lungs of nine patients in Wuhan.

And scientists at the Chinese Academy of Sciences, the People's Liberation Army and Institut Pasteur of Shanghai, have also pointed the finger to bats as the likely origin.

However, where the virus made the jump into humans remains unclear.

Initial reports suggested it happened at a 'wet market' in Wuhan, China, where humans are exposed to animal meat, blood and excrement.

However, Chinese authorities have sought to pour cold water on this and label the market as a victim rather than a 'super-spreader'.

They said a test of animals in the market showed 'none' had Covid-19.

This challenged research by scientists at Harvard, MIT and the University of British Columbia, who examined four samples from the market and found traces of the virus '99.9 per cent' identical to those taken from a Wuhan patient. 

The first case of coronavirus was reported in Wuhan in December 2019.