
Vials labelled "COVID-19 Coronavirus Vaccine" are placed on dry ice in this illustration taken, December 4, 2020. Picture taken December 4, 2020. REUTERS/Dado Ruvic/Illustration

Vials labelled "COVID-19 Coronavirus Vaccine" are placed on dry ice in this illustration taken, December 4, 2020. Picture taken December 4, 2020. REUTERS/Dado Ruvic/Illustration

Vials labelled "COVID-19 Coronavirus Vaccine" are placed on dry ice in this illustration taken, December 4, 2020. Picture taken December 4, 2020. REUTERS/Dado Ruvic/Illustration

Vials labelled "COVID-19 Coronavirus Vaccine" are placed on dry ice in this illustration taken, December 4, 2020. Picture taken December 4, 2020. REUTERS/Dado Ruvic/Illustration
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