On Tuesday it was announced that as well as Orange, the owns of Narromine, Gilgandra and Brewarrina will have their lockdowns reviewed. It is understood a decision will be made on Wednesday, with an announcement by Thursday at the latest.

This comes after news that three regions in the north of the state were to enter snap lockdowns at 5pm Tuesday. The Tweed, Byron Bay and Kempsey local government areas will be locked down for a week.

"On a weekly basis, there are local government areas that are being looked at to come out of stay-at-home orders. There's been a lot of talk about what that might look like in this coming week," Dubbo MP Dugald Saunder said.

"I can tell you those decisions will be made (Wednesday) and there are several local government areas across the district that are being looked at to come out and I would expect some fairly positive news for many of those in the next day.

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"In that way, there would be an expectation that unless something happens in the next 24 hours that they may well be a good chance of coming out from stay at home orders. We'll keep you posted with all that information as soo as we have it posted."

It has previously been stated that as well as going 14 days without having a COVID-positive person in the community, testing rates would also play a factor. This has been an issue in Orange and the Central West as a whole recently, with low numbers across the board.

Chief executive of Western NSW Local Health District Scott McLachlan explained why that 14-day period was chosen.

"Across the period of a person's infection with COVID, we know that around 14 days is where the vast majority of people are both uninfectious and recovered from their illness," he said.

"Some people take a bit longer but that has become the hallmark, 14 days is the best measure of a person coming out of their infectious period or really struggling with their illness.

"That's the best measure we have at the moment and we'll continue to refine that. It's different for different age groups as well.

"We know that some people become much more infectious than other age groups, particularly in younger kids that they're not as infectious as older generations. 14 days is the best measure we've got at the moment."