There has been one case of the virus in the Murrumbidgee Local Health District and that was confirmed at the weekend in the Albury local government area.

By Tuesday morning, a total of 715 tests had been conducted within the MLHD.

Pankaj Banga, director of medical services at Wagga Base Hospital, said as of Tuesday morning, there were no positive cases at the hospital.

"Going by what we are seeing elsewhere in the state and in the country and overseas, it is likely that more people will test positive in the coming few days or weeks," Dr Banga said.

"Our health system is different to what's happened overseas. We are better prepared, but it is likely we will see cases [in Wagga] in the coming few days or weeks."

Dr Banga said there were options for increasing the number of medical staff at hospitals, if that became necessary.

"We are doing our best to get nursing staff, medical staff, from wherever possible," he said.

"Student nurses are an option, medical students are an option, nurses and other staff who are in non-clinical roles at present. We are contacting them."

While resources, were not currently being stretched, "we are preparing for a large influx of patients, which is why we are doing all of this", Dr Banga said.

He said there were enough test kits, although all samples were still being sent to Sydney for testing, with NSW Health working on getting testing centres into regional areas.

NSW Premier Gladys Berejiklian has said the state is at a "critical stage" after another jump in the number of confirmed cases.

As of Tuesday morning, NSW had recorded 818 cases, up by 149 overnight.

A woman in her 70s on Tuesday became the seventh person in NSW, and the eighth person nationally, to die from coronavirus.