Australia NewsSouth Australia Becomes Latest State to Close BordersSavePrintSouth Australia Hospital staff simulate a drive through coronavirus testing at the Repatriation Hospital in Adelaide, Australia, on March 10, 2020. AAP Image/David MariuzAAP3/21/2020|Updated: 3/21/2020South Australian premier Steven Marshall has announced measures that effectively close the state’s borders to stem the spread of coronavirus.Premier Steven Marshall announced on Sunday that anyone entering the state would be subject to a mandatory 14-day isolation period.We had a problem loading this article. Please enable javascript or use a different browser. If the issue persists, please visit our help center.