Victoria's seven-day circuit-breaker lockdown will not end at 11.59pm on Thursday as planned, however restrictions should ease in regional areas.

Acting Premier James Merlino said regional restrictions were "proposed to begin easing from 11.59pm tomorrow night. We'll use the next 24 hours to continue tracing and testing and confirm this change can go ahead."

Mr Merlino thanked all Victorian for their current efforts, after a record day of more than 50,000 tests and 20,000 vaccinations.

"This is quicker and more contagious than we have ever seen before," he said.

"If we let this thing run its course, it will explode. If we don't run it to ground, people will die."

On Tuesday night Chief Health Officer Brett Sutton said the Indian-variant strain of COVID was transmitting "faster than any other strain we've dealt with".

Meanwhile, no new COVID-19 cases have been recorded in NSW but the South Coast remains on high alert after a person from Melbourne who was later diagnosed with coronavirus visited the area late last month.

Extra testing clinics were set up after Victorian health officials notified NSW Health the person visited Jervis Bay, Goulburn, Hyams Beach and Vincentia on May 23 and 24.

The person had some symptoms on May 25, after driving back to Melbourne on May 24, and tested positive on Monday May 31 - almost a week later.

NSW Health said there were no new locally-acquired cases in the 24 hours to 8pm on Tuesday from 21,551 tests.

South Coast MP Shelley Hancock says the highly contagious nature of the Indian COVID variant is "super alarming" and is urging locals to "please get tested and then isolate at home" and get vaccinated as soon as possible.

"We're not used to being on high alert on the South Coast," she told Sydney radio 2GB on Wednesday.

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Ms Hancock is concerned about the impact of an outbreak on the area's elderly population.

"Sometimes complacency sets in - well, here's the wake-up call," she said.

NSW Health has issued a list of venues of concern around Jervis Bay and is urging anyone who visited them at the times listed on the department's website to get in contact, get tested and to isolate until they receive further instructions.

The venues include the Green Patch campground and Booderee National Park at Jervis Bay, the Cooked Goose Cafe at Hyams Beach, Coles Vincentia Shopping Village and Trapper's Bakery and Shell Coles Express Big Merino at Goulburn.

The popular Cooked Goose Cafe has closed for deep cleaning with the owners and eight staff in isolation.

Anyone who lives in Jervis Bay or has visited there since May 22 is asked to get tested and to isolate if they have even the mildest of cold-like symptoms.

Meanwhile, it's believed the NSW cabinet will consider a plan on Wednesday to fly in 250 international students on chartered flights who will undergo quarantine at special student facilities.

The Daily Telegraph reports that under the proposal, universities would pay for the flights and four quarantine sites have been identified for the students.

- with Australian Associated Press