Hurdles and advances in the great coronavirus vaccine race 

With nearly 600,000 reported deaths from COVID-19, the whole world is watching for progress in the scientific race to develop a much-needed vaccine. US biotech company Moderna seems to be taking a lead with published results from phase one of its trial out this week, and news that it’s launching phase three clinical trials in just 10 days. Host Carol Hills speaks with The World’s Elana Gordon, who has been monitoring the different players and turns in this race.