MLHD COVID-19 coordinator Emma Field said the district was reaching "that pointy end" of the campaign.

"We're reaching into those groups who haven't had maybe the supply, or groups that maybe don't have access to some of the clinics that are around," she said.

"We want to make sure every person in the Murrumbidgee ... has had the opportunity to be vaccinated."

Ms Field said that Tuesday was the MLHD's biggest day of vaccinations yet, with more than 800 people coming forward to receive a jab. There has also been a renewed focus on COVID testing in Edward River, where eight cases have been reported during the current outbreak, and in West Wyalong, where traces of the virus have been detected in sewage.

Meanwhile, a third primary shot of the COVID vaccine for severely immunocompromised people is also expected to rollout in the MLHD "within a week or two".

This shot isn't a booster, but a third shot for those with serious health concerns.

"We are looking now at how we implement that," Ms Field said.