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A health worker places packages containing doses of the AstraZeneca vaccine in a fridge upon their arrival at a vaccination center in Rome, Tuesday, Feb. 9, 2021. The Italian government revamped its vaccination plans last week after Pfizer-BioNTech and Moderna reduced vaccine deliveries and ItalyâÄ™s pharmaceutical agency gave âÄœpreferential useâĝ for AstraZeneca shots for people aged 18-55, including teachers, police officers and other exposed categories of workers. (Cecilia Fabiano/LaPresse via AP)