Full Top Headlines 7NEWS Australia for August 21

A national cabinet meeting is underway, with the PM and state premiers trying to resolve issues over border closures; Queensland’s premier has slammed a COVID-positive woman who went to work at a Brisbane detention centre; Joe Biden has accepted his party’s nomination for president on the last evening of the Democratic Convention; Victoria is continuing its downward trend of coronavirus, recording its lowest day in more than a month at under 200 cases.