The case is located in Bourke and is currently unknown if they had been infectious within the community. It remains under investigation.

Western NSW Local Health District chief executive Scott McLachlan said it was a real success to see the region's case numbers declining in recent weeks, however, it was "not the time to start relaxing".

"Case numbers are definitely declining across the whole region, definitely positives with that, but we still can't afford to think we're out of the woods," Mr McLachlan said.

"We've got around a half a dozen more cases which were identified since 8pm [Monday]- It's still early but I believe they are in Wellington and Walgett LGA and I suspect there will be more on top of that.

"We're definitely not heading towards total elimination just yet and with things opening up we can expect to see further spread in coming weeks.

"There is a decreasing risk [with declining numbers] but we're definitely not past it. I certainly wouldn't say it's time to relax."

Mr McLachlan said the region had reached a milestone in that there were currently no COVID-19 patients across the region in hospital.

Also within the 24 hours to 8 pm Monday a further 12 patients were released from the Care in the Community Program, leaving 137 active COVID-19 cases across the region.

The Dubbo Regional Council area is now also sitting at an 86.4 per cent double vaccination rate, with 95 per cent having had their first dose.

Mr McLachlan said he was hoping to see the region reach above a 90 per cent double vaccination rate in the coming weeks.

"There has been more proof that the vaccine is crucial," he said.

"We still have 137 people with active cases, 75 per cent of those cases haven't been vaccinated, 20 per cent have had a dose. Most of the people catching COVID-19 are unvaccinated."

Mr McLachlan said the majority of cases in recent weeks across the region had been in people 25-years-old and younger.

"We're nearly there, we still have a couple of areas in NSW where we want to see vaccination rates lifted, one of those is Cobar. Cobar is a real concern with one of the lowest vaccination rates in the region," he said.

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