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Sydney Man Dies From COVID, 89 New Cases

Despite a drop in new virus cases - from 112 the previous day to 89 on Tuesday - NSW's premier has warned she may further extend Greater Sydney's lockdown.

A man in his 70s has become the second person to die during Sydney's coronavirus outbreak as NSW recorded another 89 locally acquired cases of the disease.

The death of the man from Sydney's eastern suburbs on Monday comes after a woman in her 90s died on the weekend, taking the national tally to 912 since the pandemic began.

The 89 cases were diagnosed from more than 49,000 tests in the 24 hours to 8pm on Monday, taking the cluster which began in Bondi on June 16 to 767.

Some 27 were not in isolation for all or part of their infectious period.

Among the new cases is a construction worker who was working in Goulburn - about 200km from his home in Sydney - confirming fears the outbreak has reached the regions.

NSW Chief Health Officer Dr Kerry Chant said health authorities were assessing whether restrictions would need to be tightened outside of Greater Sydney as a result.

"It does highlight why people cannot be complacent about the risk anywhere," she said.

The Goulburn case has also prompted the introduction of new testing requirements for essential workers, in an effort to stop any further seeding.

Anyone performing essential work who lives or works in the Fairfield local government area must be tested every three days, while anyone from Greater Sydney travelling to the regions for work must be tested weekly.

"We know how easy it is with the Delta variant for two cases to become 20, to become 100 very, very easily," Premier Gladys Berejiklian said.

The person is understood to be a Sydney painter who travelled to work on the construction of the new Goulburn Hospital.

The outbreak had been confined to the locked-down areas in Greater Sydney and its surrounds until now, and there are concerns the loose definition of "essential work" is putting regional towns at risk.