The Royal Children's Hospital has advised families in NSW red zones to apply for a permit if they are to come to Melbourne.

"In the first instance, families should contact their treating clinician before they plan any intended travel," a spokeswoman said.

"All entry to Victoria is governed by the Victorian Border Entry System and families will be required to apply for a border permit before entering, if the care is approved.

"All requests for urgent and time-critical care are assessed on a case-by-case basis, in consultation with the treating clinician.

"Where care can be safely deferred or delivered using telehealth, it will be.

"In the cases of urgent or time-critical treatment, individual care plans will be developed to minimise risk to our staff, patients and other families.

"This may include restrictions on who can attend with the child/young person and potential periods of quarantine prior to the treatment taking place."

Albury Wodonga Health's second testing station, established at the Wodonga Racecourse, will still open today with operations to be confirmed thereafter.

"Due to the high number of people currently wanting to be tested, people can expect longer than usual wait times," a spokeswoman said.

"The current turnaround time for test results is 24 to 72 hours.

"No appointment is necessary for testing at either Wodonga testing clinic."

The Department of Health and Human Services was asked:

If a NSW cross-border community member, or a Victorian cross-border community member who has been on the NSW side of the border bubble, needs to access medical care or other essential services in Melbourne:

DHHS referred The Border Mail to its website. It reads:

Greater Hume Mayor Heather Wilton said without a clear answer on whether NSW border bubble residents could travel to Melbourne with just their licence, it was confusing.

"I think it will in time cause some angst and confusion because it really isn't clear," she said.

"There is one person, not in our shire, who I know is needing to travel to Melbourne for medical arrangements and they're not quite sure how they're going to handle it.

"Anyone who is in Greater Hume in a similar position will be wondering what's going on.

"If people need to go to Melbourne for medical or other arrangements they deem necessary, they would probably need to have a doctor's certificate or something similar confirming your appointment.

"I wouldn't risk going just thinking it will be OK."

Cr Wilton urged people in regional NSW to call ahead to their final destination and to check both states' advice.

"We need to look first of all at the NSW information and then if we have to go to Victoria, look at what's happening in Victoria, because there will be a different set of circumstances," she said.

"I travelled over to Wodonga yesterday and I was fine, but to be sure on Sunday evening, I got myself a permit.

"It was OK then (in January) crossing, but it wasn't then like it is now and now we just don't know what's going to happen next."

Victoria Police's presence on the Lincoln Causeway reduced today, with a checkpoint reinstated at a Chiltern rest-stop.

Traffic control was still in place at the border crossing, with some NSW drivers being checked.

The Border Mail understands the checkpoint may return later in the week, with an area closer to Diamond Park being considered.

Victoria Police Air Wing was being used for surveillance on the Hume Freeway, at times flying low over traffic.

In line with the designation of all of NSW as a red zone, the Victorian Border Crossing Permit Directions (No 20) came into effect at midnight.

It notes a cross-border resident may enter Victoria without a permit if they have not been in a red zone outside of the cross border community area.

The removalists from NSW who have infected a family in Melbourne highlight the importance of the border restrictions, according to Victoria's COVID Commander Jeroen Weimar.

Mr Weimar said the removalists who travelled from NSW to Victoria and South Australia while infectious stopped at a service station and McDonald's in Ballan for two hours.

"The evidence they've given so far is that there is no other stop they've made on their way into Melbourne, or on their way on to Adelaide - we have the exposure sites we have identified at this point in time," he said.

"Those conversations will continue and we'll continue to see what else we can drive out of them.

IN OTHER NEWS:

"It is theoretically possible, or it entirely possible in fact, they may have stopped just shy of the border in New South Wales - that's not my concern.

"For them to have made the journey that they've made, I have to say, Sydney-Melbourne-Adelaide and return in a little over 48 hours is a fair crack."

The closest exposure site to the Border NSW Health had listed was Hungry Jacks at Marulan.