Update: further details of the newly announced Queensland-New South Wales border restrictions have been added to this story.

If you’re concerned about going out or suspect you may have contracted Covid-19, consult Queensland Health.

Queensland will close its borders in order to combat the escalating Covid-19 crisis, Premier Annastacia Palaszczuk announced via Twitter on Monday.

The measures come into place at midnight on Wednesday (essentially the early hours of Thursday). They will mean anyone arriving from interstate, whether residents or visitors, will be required to self-isolate for 14 days, the ABC reports.

Further details – including exemptions – were announced Tuesday after a meeting of the Queensland Disaster Management Committee. The border crackdown will cover road, rail, sea and air. From 12.01am on Thursday the police will operate RBT-style road blocks to enforce the lockdown. Only those travelling for work, medical appointments or delivering freight will be allowed across the border. Those travelling for work will need to apply for a permit (the permit system was yet to be finalised at the time this story was updated).

Passengers at departure points travelling to Queensland will be advised of 14-day self-isolation requirements once they reach Queensland, while those arriving at Queensland airports will be met by police and other officers.

“Unless you're returning home to Queensland or coming to Queensland for an essential purpose like work or a medical appointment, or freight issues, then the border is closed to you,” Palaszczuk said in an announcement to the media yesterday.

The Queensland-New South Wales border last closed at the end of World War 1 to contain the Spanish flu. The move follows recent decisions by Western Australia, South Australia, the Northern Territory and ACT to impose a 14-day quarantine period on visitors.