AstraZeneca China Headquarters as Drugmaker Eyes Gilead [Getty Images]

A pedestrian walks past signage outside an AstraZeneca Plc research and development facility in Shanghai, China, on Monday, June 8, 2020. AstraZeneca, co-developer of one of the fastest-moving experimental coronavirus vaccines, has made a preliminary approach to Gilead Sciences Inc., maker of the only U.S.-approved treatment, according to people familiar with the matter. Photographer: Qilai Shen/Bloomberg via Getty Images

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