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America's federal system of government delegates powers to the governors of the 50 states, but the president in theory can use his powers to oversee a coordinated national strategy.

Among the more than 400 hospitals that use the company's AI products, about 70 percent are tertiary hospitals, but Qiao estimated the situation will reverse within a few years. China has a three-tier hospital grading system with the third grade being the highest.

Amazon’s music service now has an ad-free radio station feature similar to what companies like Pandora and Apple (iTunes Radio) already?offer.

Amazon’s seasonal hiring has more than doubled since 2012, when the company created 50,000 positions for the holiday season. The company has been steadily expanding its network of fulfilment centers in recent years and building out its own?delivery?system of planes, trucks and other vehicles.

Amazon’s moves reflect its growing interest in health healthcare. Existing initiatives include its Haven healthcare joint venture with JP Morgan Chase and Berkshire Hathaway; Halo health tracking device; COVID-19 testing for Amazon employees; and Amazon Care virtual and in-person clinics, currently offered as a pilot program for employees in the Seattle region.