Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Australian States Close Borders as COVID-19 Threat Intensifies Phil Mercer SYDNEY - Australian states are closing their borders Tuesdayin a bid to slow the spread of the COVID-19 virus. Western Australia, South Australia and the Northern Territory will grant quarantine-free entry to only essential workers from other parts of the country. There are more than 2,000 confirmed COVID-19 cases in Australia. So far, eight people have died. .