Murrumbidgee Local Health District have warned that residents who test negative for COVID-19 are not immune to the disease.
No new cases have been detected in the region.
Director of public health Tracey Oakman said a test result reflects the status of someone at the time of the swab.
She said if some develops further symptoms they require additional testings.
"It doesn't mean you are immune to COVID and it doesn't mean you won't subsequently contract the disease," she said.
"If you are symptomatic and you get tested and you're negative that's fantastic but if you then go on to develop symptoms again the following week... please get tested again.
"We're encouraging people to get tested every time they have a new set of symptoms."
Ms Oakman said anyone who has cold and flu like symptoms should be tested and should self isolate, even if the test was negative, to prevent the spread of symptoms.
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She said as restrictions ease it's more important than ever to be aware of social distancing and to get tested.
"The easing of the restrictions, for health people, is a concern and we're monitoring the situation very closely," she said.
"We're regularly looking for cases and trying to isolation them quickly so they don't spread but obviously with more and more people gathering together there's an increase in risk of those cases getting out of control.
"We don't want that so will will be doing close monitoring and will be definitely advising the government of our views whether perhaps those restrictions need to be reintroduced or not relaxed as fast as they wanted to and that's why the testing is really, really important."
Ms Oakman said the service was extremely concerned about possible undetected cases spreading through the community, which was why it was important anyone with any symptoms is tested.
"That's probably our greatest concern," she said.
"That people will come to our community whether they're locals or visitors and spread it to people in the community and we won't pick it up until a couple of generations of the infection."