All people arriving in Australia from midnight Sunday will be required to self-isolate for 14 days, Prime Minister Scott Morrison has announced.
There's also a ban on cruise ship arrivals for at least 30 days.
The new measures, mirroring those taken earlier by New Zealand, have been introduced to slow the spread of the global pandemic across Australia.
Morrison also urged people to practice "social distancing", and advised against non-essential gatherings of more than 500 people from Monday.
So far, Australia has recorded more than 250 cases of coronavirus and three deaths.
The COVID-19 has infected 156,00 people globally and killed more than 5,800.
At least 14 killed in explosion at weapons depot in Syria
US hits five Iranian oil tankers after attack on Navy ships
UK gives air traffic provider a week to probe outage that halted flights
Serbia's President Vucic dissolves parliament, calls snap elections
With large crowds attending, Norway lays King Harald to rest
Jordan intercepts 18 Iranian ballistic missiles
Air traffic control issue disrupts flights at major UK airports
At least 73 injured after Houthi rebels attack Saudi civilian and energy facilities
