Wagga epidemiologist Alison Koschel said isolating meant "going straight home" immediately after having a test.

"That means not stopping at the shops to get provisions, not stopping at the pharmacy to get medication," Dr Koschel said.

"So whether you end up with COVID-19 or if you end up with a cold or influenza, the response is still the same.

"If you isolate yourself and don't share your germs with other people, you stop the spread of disease."

Dr Koschel said everyone had the capacity to spread the disease and reminded people that testing times varied.

"Some people might get their results very quickly, some people have to wait a little bit longer," she said. "[If] they come back negative, that's a great and it's a fabulous relief for you, [but] while you're still symptomatic ... you should still stay at home."

Wagga pharmacist Luke van der Rijt said people had been stopping in at his SouthCity Pharmacy to purchase medication on their way home from being tested.

"We have unfortunately seen people who have had their tests and had come in to get symptom control after their test when they should be self-isolating," Mr van der Rijt said.

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"Obviously no one wants COVID-19, but particularly the more vulnerable, our clients who are in the pharmacy: those who are unwell, immunocompromised or the elderly."

Mr van der Rijt said people could instead have their medication delivered to their home or dropped off to their car.

"The best way to do this is to contact your community pharmacy and ask for options on how best to get your medications in your home," he said.

"Just tell them you have had a COVID-19 swab and they can look after you and make sure you get access to medications that you do need."

Mr van der Rijt said anyone in Wagga who needed this service could access it, even if they weren't a regular customer of any pharmacy.

"There are options both free and paid ... depending on what you need," he said.

"The main thing is, get in contact with your local pharmacy and they'll be there to help you out, even if you're not a regular."