The Australian government is calling for the G20 countries to take action on wildlife wet markets, calling them a "biosecurity and human health risk".

Australia is not yet calling for a ban but says its own advisers believe they may need to be "phased out".

"Wet markets" are marketplaces that sell fresh food such as meat and fish, with some also selling wildlife.

It is widely believed that the corona virus may have emerged at a wet market in Wuhan, China that sold live, "exotic" animals.