The risk is of extremely low ... because she's right at the end of her infectious period," Dr Young said."With a normal variant we would not be as concerned … but because of this new variant we are just being ultra-cautious."We're working through any close contacts that need to be looked at there."The woman caught flight JQ570 from Melbourne to Brisbane, arriving at 11:00pm on January 5, Dr Young said.staying with her parents.Dr Young said Victorian health officials followed an older protocol which did not require the woman to test negative before leaving hotel quarantine."People needed to have had no symptoms for a minimum of three days, which certainly was the case, or at least 10 days from when they were tested, and it is whichever is the longest," she said."So you've got to have had first no symptoms for three days, and then second, at least 10 days since you tested, so she met those two criteria."That protocol has now changed nationwide, according to Victorian Health Minister Martin Foley."As a result of the changing nature of the infectivity of new and emerging strains, out of an abundance of caution, that system has been toughened and that's a decision that we've both implemented and welcomed," he said.NSW Chief Health Officer Kerry Chant said the new rules were also being appliedin that state."Now we will be ensuring that anyone won't be released from isolation until at least 14 days after symptom onset, and they will also have a PCR test [at the] end of the isolation period," she said.Stay up-to-date on the coronavirus outbreakDownload the ABC News app and subscribe to our range of news alerts for the latest on how the pandemic is impacting the worldlockdown, January 8, 2021.(Supplied: Queensland Health)Zero new cases in Queensland
Meanwhile, Queensland recorded no new cases of coronavirus on the first full day of a three-day lockdown for Greater Brisbane which came into force on Friday at 6:00pm.The lockdown was imposed after a cleaner at the Hotel Grand Chancellor tested positive to the highly infectious coronavirus variant first identified in the UK.Dr Young said 91 close contacts of the woman had been traced and returned negative tests. They'll be in quarantine for 14 days, when they will be re-tested.The Chief Health Officer said she was concerned about casual contacts that authorities had not been able to trace.Health officials have released a list of placesthe cleaner visited from January 2 to January 5, while she was infected.Fines issued for non-complianceQueensland Premier Annastacia Palaszczuk thanked Queenslanders for complying with lockdown directives.More than 14,784 tests were conducted in the last 24 hours, and 178 clinics were open in the Greater Brisbane area where people could go to get tested, she said.