The United States on Thursday took the grim title of the country with the most coronavirus infections and reported a record surge in unemployment as world leaders vowed $5 trillion to stave off global economic collapse.

More than 500,000 people around the world have now contracted the new coronavirus, overwhelming healthcare systems even in wealthy nations and triggering an avalanche of government-ordered lockdowns that have disrupted life for billions.

In the United States, more than 83,000 people have tested positive for COVID-19, edging out Italy, which has reported the most deaths, and China, where the virus was first detected in December in the metropolis of Wuhan.