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Josefa Perez, 89, reacts after being vaccinated against Coronavirus at a nursing home in l'Hospitalet de Llobregat in Barcelona, Spain, on Sunday, Dec. 27, 2020. The first shipments of coronavirus vaccines developed by BioNTech and Pfizer have arrived across the European Union, authorities started to vaccinate the most vulnerable people in a coordinated effort on Sunday. (AP Photo/Emilio Morenatti)