US expands use of Pfizer’s Covid-19 vaccine to include adolescents

US regulators have expanded the use of Pfizer’s Covid-19 vaccine to children as young as 12, offering a way to protect the nation’s adolescents before they head back to school in autumn (Robert F Bukaty/AP)
US regulators have expanded the use of Pfizer’s Covid-19 vaccine to children as young as 12, offering a way to protect the nation’s adolescents before they head back to school in autumn (Robert F Bukaty/AP)

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