Queenslanders are being warned to reconsider travelling to Melbourne as the state prepares to shut its border to travellers from the Victorian capital's coronavirus risk zones.
A worker and a returned traveller at the Holiday Inn at Melbourne Airport tested positive for COVID-19 on Wednesday afternoon, taking the number of the cases in the current outbreak to eight.
The Queensland government will bar entry to anyone who has been to Melbourne's 29 exposure sites from 1am on Saturday.
Acting Chief Health Officer Sonya Bennett says Queenslanders should reconsider visiting Melbourne altogether.
"If the situation takes a turn for the worst, we may need to act, so I continue to ask Queenslanders to reconsider the need to travel to Victoria," she said.
"If you do decide to go, I recommend you have plans in place to get back to Queensland quickly."
Melbourne hasn't been declared a hotspot, but travellers from the Victorian capital have been required to self-isolate and get tested upon arrival in Queensland since January 29.
Acting Premier Steven Miles said travellers will also have to declare they haven't visited any of Melbourne's 29 exposure sites before being allowed to enter the Sunshine State from Saturday.
"People coming from Victoria will need to make a border declaration that will allow us to check whether they've been in any of the locations that have been identified by the Victorian contact tracers, whether they are required to get tested, and to notify them if that is the case and require that they isolate," he told reporters on Thursday.
Dr Bennett said anyone who has been to Melbourne's risk venues will be barred from entering the state.
She said those people should technically be in quarantine in Victoria anyway, so Queensland Health was assisting their Victorian colleagues.
"They won't be allowed to come in ... because technically they should be in quarantine in Victoria so we're sort of helping our colleagues as well as protecting ourselves," Dr Bennett said.
"So we don't anticipate that anyone who has been in those locations of interest to travel to Queensland but it's just an added assurance."
Police won't be setting up road border checkpoints but any visitors caught driving or flying in without a formal declaration or with a false declaration could be fined up to $4000.