The US will require airline passengers coming from China to show negative Covid-19 tests as global concerns ratchet higher over the virus's spread since the country lifted restrictions aimed at stamping out infections. Jordan Fabian reports on "Bloomberg Markets: The Close." Follow Bloomberg for business news & analysis, up-to-the-minute market data, features, profiles and more: http://www.bloomberg.com Connect with us on... Twitter: https://twitter.com/business Facebook: https://www.facebook.com/bloombergbusiness/ Instagram: https://www.instagram.com/quicktake/?hl=en