Coronavirus pandemic: China doubles down in the global race for a vaccine

Drugmakers and research centers around the world are working on Covid-19 vaccines. At least four Chinese vaccines are far along including those from China National Biotec Group (CNBG), CanSino Biologics and Sinovac. Sinovac and CNBG have said to expect early trial data as soon as November. FRANCE 24's Charles Pellegrin tells us more.