Australia's state of Victoria declared a disaster on Sunday and imposed a nightly curfew for the capital Melbourne as part of its harshest movement restrictions to date to contain a resurgent Covid-19. Melbourne, Australia's second-largest city, is already under a reimposed six-week stay-home order but struggling to rein in the disease, with record numbers of infections of coronavirus last week. On Sunday, Victoria, the second-most populous state, reported 671 infections - one of its highest - and seven Covid deaths. High numbers of community transmissions and cases of unknown origins have forced the new restrictions, which will be in place for six weeks, officials said. "The current rules have avoided thousands and thousands of cases each day, and then thousands of people in hospital and many more tragedies than we have seen. But it is not working fast enough," Victoria Premier Daniel Andrews told a televised briefing. Click here to read full news..