Millions of people in China are traveling again during the first major holiday since the Covid-19 outbreak. As China shows its confidence in containing the pandemic, will getting the country moving around come at a risk? CNN's David Culver reports.
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Two of the frontrunners in the global race for a coronavirus vaccine are unlikely to be ready before the US election on November 3, dashing President Donald Trump's campaign promise of delivering doses by the time of the vote.