Protesters hold national flags and rally in Tahrir Square on Friday. Associated Press
Tens of thousands of people have taken to the streets in recent weeks in the capital, Baghdad, and across the Shiite south, demanding sweeping political change. The protesters complain of widespread corruption, a lack of job opportunities and poor basic services, with regular power cuts despite the country's vast oil reserves.
Populist Shiite cleric Moqtada Al Sadr, who leads parliament's largest bloc, had asked Abdul Mahdi to call an early election. When the premier refused, he called on his main political rival Hadi al-Amiri to help oust him.
The UN called on Iraq to rapidly and transparently investigate force used by anti-riot police in clashes with protesters that have left dozens dead.
The first phase testing would take around three months, CSIRO's director of health Rob Grenfell told Reuters, adding that any resulting vaccine would not be available to the public before late next year.
Confirmed coronavirus infections around the world approached one million on Thursday as the pandemic spread at a "near-exponential" rate, with a six-week-old baby becoming one of the youngest known victims.
The Chinese city, Shenzhen has banned consumption of dogs and cats as part of a clampdown on the wildlife trade since the emergence of the novel coronavirus.