The Northern Territory has "dodged a lot of bullets" in avoiding an outbreak of coronavirus, according to the Territory's Chief Health Officer, who flagged the possible need for random testing and localised lockdowns if community transmission occurs.

Key points: There has been no community transmission of coronavirus so far in the NT

There has been no community transmission of coronavirus so far in the NT The travel plans for all fly-in, fly-out workers are being checked by authorities

The travel plans for all fly-in, fly-out workers are being checked by authorities The NT has the country's lowest rate of COVID-19 cases

Dr Hugh Heggie said there were concerns over movements between remote communities in Western Australia and the NT, after an outbreak in the Kimberley region last week.

"We dodged a lot of bullets in that the cases there did not make their way into the Northern Territory," he said.

Dr Heggie said all 28 coronavirus cases recorded in the Northern Territory so far had been linked to travellers arriving in the NT.

But he said if community transmission occurred authorities would consider further restrictions and testing in certain areas.

"If we get a case that is not directly related to travel then we need to be very quick to test around in that environment," he said.

"And if needs be, I will say this, even lock down a community for a short time, where people should not move out of their houses until we identify those people who are infected."

Dr Heggie told ABC Radio Darwin restrictions on travel to the Northern Territory and to remote Indigenous communities were helping reduce the risk of coronavirus.

But he said the exemption of hundreds of people from the strict quarantine measures was needed to maintain services and supply lines.

The Northern Territory is considering further local restrictions in the event of community transmission of coronavirus. ( AP: Ted S Warren )

"Those who come here from elsewhere to work, they are sometimes transiting just through the airport. Sometimes they are going out to very remote parts of the Territory. They are all required to have a plan," he said.

"That includes those who come through the airport, whether that be to go out straight away by a helicopter to a gas rig or whether it is to go to a site somewhere in the Territory.

"We do have a number of fly-in, fly-out workers in a number of industries including health and we do need those.

"We are a small population and we don't have all the health expertise that we need."

But Dr Heggie said that all travel plans for fly-in, fly-out workers into remote areas had to be submitted to authorities for approval.

"There is a process that you have to apply, that's true, and then there is a team that look at those plans. There are hundreds of them," he said.

Dr Heggie said he had requested further information on some plans.

"Some people want to come here when they are not considered essential, that's true," he said.

"There have been people who have wanted to come here because they have wanted to do some tourism."

National data updated to April 7 shows the Territory has the lowest rate of COVID-19 cases in Australia.

There have been 2,317 compliance checks completed in the NT so far, with seven fines issued to people who failed to adhere to mandatory quarantine directions.

Stay up-to-date on the coronavirus outbreak Download the ABC News app and subscribe to our range of news alerts for the latest on how the pandemic is impacting the world