‘Greatest obstruction’: Where can CanSino test its immunization abroad? Kumar Jeetendra | July 30, 2020 CanSino Biologics Inc, one of several companies globally attempting to create a coronavirus vaccine, should run late-stage trials overseas if it’s to remain in the race, experts say, but it has yet to declare a different country ready to help. Mid-stage trials revealed that its vaccine didn’t work also in people with immunity to a …