Single cases have been found in Wagga, Berrigan, Greater Hume and Griffith local government areas, while the Murray River recorded eight new detections and Albury a further 14.

The Murrumbidgee Local Health District's 26 cases announced on Monday morning mean almost one in five of the new NSW cases are residents of this region.

Just one local health district recorded more new detections of the virus in the 24 hours to 8pm on Sunday, with the Hunter New England LHD topping the state with 30 new cases.

In other news

Two people have died in the MLHD, NSW Health's Dr Jeremy McAnulty confirmed, with the loss of a man in his 70s and a 101-year-old woman in Albury.

"Sadly we're reporting the deaths of four people," Dr McAnulty said of the state figure.

"Two of the people, a man aged in his 70s and a woman aged 101, acquired their infections at the Mercy place aged care facility in Albury."

Both were fully vaccinated, had underlying health conditions and acquired their infections at the Mercy Place aged care home.

There has now been five deaths linked to an outbreak at that facility.

The interstate, trans-Tasman situation

The latest cases come on the back of Wagga's COVID detections more than doubling over the last week and the reopening of travel across the state.

Three cases of COVID-19 were announced for the Wagga local government area on Saturday, and another one on Sunday.

The arrival of travellers could also add to the burden of the MLHD's growing COVID situation, Wagga MP Joe McGirr has said, as he raised concerns that accessing information about exposure sites remains problematic for some of his constituents.

Weekend sewage surveillance testing across the region has returned positive results in several treatment plants, the MLHD said.

While no further detections have been made in the last 24 hours, fragments of the virus were found in Wagga, Leeton and Young.

"MLHD appeals to residents in Leeton to come forward for testing if they are at all symptomatic," the health service urged.

"Early detection of the virus will help prevent further transmission."

Additional testing is available in Albury, Jerilderie and Leeton this week.

Tests can be taken at the Jerilderie MPS between noon and 3pm on Monday, with bookings to be made by calling the MLHD hotline on 1800 831 099.

Leeton residents seeking a test locally can do so between 9am and 11am on weekdays, by dropping into the Leeton Hospital in Myall Street or booking an appointment through the hotline.

More on the pandemic

Increased testing in Albury is available until 4pm on Monday at the Albury Entertainment Centre on Swift Street, and at the Westside Community Centre between 10am and 4pm on Wednesday and 9am and 2pm on Thursday.

Walk-ins are accepted or bookings can be made through the hotline.

Wagga residents can get tested at the MLHD's Murray Street clinic between 9am and 4pm daily, or at the drive-through site at Equex on Copland street between 1pm and 6pm.

It's also available at the GP-led respiratory clinic at Glenrock in Glenfield Park between 9am and 5pm weekdays, or the Laverty Pathology drive-through site on at the Riverina Playhouse car park off Tarcutta Street between 8am and 5pm Monday to Thursday, 8am to 3pm Fridays, and 8am to 1pm on weekends.

For further testing locations across the district go to www.mlhd.health.nsw.gov.au, or for help accessing a test call the Murrumbidgee COVID-19 Hotline 1800 831 099.

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