The best defence against the coronavirus is being healthy, if the infection hits. Focus on general hygiene and having "a solid immune system" The basics are sleep, exercise and proper hydration. Here are some home remedies you can do.
As the virus spreads, the Victorian governments latest press release is that "Any travellers returning from any country outside Australia should now be considered at risk". (https://www.dhhs.vic.gov.au/coronavirus-covid-19-daily-update