A healthcare worker prepares a dose of the Russian Sputnik V Covid-19 vaccine at Hospital Lucio Melendez de Adrogue in Buenos Aires, Argentina, on Monday, Jan. 11, 2021. Argentina expects to receive 20 million Sputnik-V vaccine doses between January and February, and could add 5 million more in March. Photographer: Anita Pouchard Serra/Bloomberg via Getty Images
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