Australia is considering tougher restrictions on public gatherings to slow the spread of the coronavirus as the Sydney Opera House closed its doors, national airline Qantas slashed its international flight capacity and courts suspended hearings. Prime Minister Scott Morrison will meet with the newly formed national cabinet, an emergency response team that includes state leaders and senior medical officials, by video link later on Tuesday amid concerns the virus spread has picked up pace. Morrison also announced on Monday that anyone arriving in Australia from overseas would be required to self-isolate for 14 days, but he stopped short of taking tougher measures like closing schools or imposing curfews.