It was November 2020, and for the first time, the news cycle was bringing tidings of hope in the fight against Covid-19. Not only Pfizer-BioNTech, but Moderna and then Oxford-AstraZeneca all reported Phase III clinical trial results for their vaccines with efficacies that went beyond the expectations of the most optimistic of scientists. What followed was an onrush of political deal-making and vaccine diplomacy, as the world's leaders scrambled to be the first to get their hands on the new shots.

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