Australia's states and territories are responding to a growing cluster of coronavirus cases in Sydney's eastern suburbs.

Three cases have been detected in Bondi, including a man who works as a hire car driver transporting international flight crews.

His wife has tested positive, as has a woman aged in her 70s who was at the same cafe as the driver.

A fourth person, a man in his 40s from Baulkham Hills in the city's north-west, has also tested positive. At this stage, he is not linked to the Eastern Suburbs cases.

READ MORE: New coronavirus cases diagnosed in Sydney following driver infection

READ MORE: Queues at testing sites in Sydney after new exposure sites listed

Queensland

Anyone who enters Queensland from a New South Wales exposure site from 1am tomorrow will be required to go into hotel quarantine for 14 days.

The premier announced the response to Sydney's cluster this morning, while confirming the state would introduce a new "traffic light" system for all arrivals from 1am on Saturday.

It requires all people entering Queensland to complete a border declaration, regardless of whether they've been to a declared hotspot.

https://twitter.com/miaglover_9/status/1405319857189494786

Green means you're free to enter Queensland, yellow means you've been to a hotspot and must isolate and get tested. Red means you can't enter at all.

Residents of border communities travelling within the border region will be exempt.

Victoria

The Victorian government has imposed initial restrictions, classifying the City of Sydney, Waverley and Woollahra local government areas as orange zones.

This means anybody who has arrived into Victoria from those areas from June 11 must isolate, get tested and stay isolated until receiving a negative result.

Authorities in Victoria have not imposed any restrictions at this stage, but acting Premier James Merlino said the state is keeping an eye on things.

Victoria has published a list of testing sites online.

"We are, of course, continuing to monitor the situation in New South Wales with their cases and any implications for Victoria," Acting Premier James Merlino said.

Tasmania

Tasmania's Public Health Services has declared a number of venues across NSW as high-risk.

Anyone who has been at the growing list of exposure sites, also listed on the Travel Alert website, must immediately self-isolate and contact Tasmania's Public Health Hotline on 1800 671 738.

Travellers intending to travel to Tasmania who have spent time at a high-risk (Level 1) premises at the specified dates and times listed, are not permitted to travel to Tasmania.

People have been told to monitor the list of venues and book an test if they develop even mild symptoms.

South Australia

People who have been in high-risk locations in Sydney will be banned from entering South Australia from this afternoon.

Those who have already arrived in SA must quarantine immediately and contact SA Health for further advice.

The new direction will be signed by SA Police Commissioner Grant Stevens this afternoon.

https://twitter.com/RoryMcClaren9/status/1405359449124999170

Western Australia

WA Premier Mark McGowan said the state government was "very, very closely" monitoring the COVID-19 situation in NSW.

"If you have been to one of the exposure sites and come to Western Australia, you are currently required to quarantine and be tested," he said.

"Obviously we will monitor that, if we need to put in place stronger measures in coming days, we will."

Mr McGowan said the government would follow health advice.

You can find out more details about how to book your vaccine through the Federal Government health site here.