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Tinglong Dai

A health care worker injects the a syringe of the phase 3 vaccine trial, to a volunteer at the Ankara University Ibni Sina Hospital in Ankara, Turkey on October 27, 2020. This vaccine candidate developed against the novel coronavirus (COVID-19) pandemic by the U.S. Pfizer and German BioNTech company. (Dogukan Keskinkilic/Anadolu Agency via Getty Image)

What vaccine distribution planners can learn from Amazon and Walmart

Christopher S. Tang, Tinglong Dai