The Biden administration’s plan for a widespread booster programme was dealt another blow as a panel of advisers to the top public health agency recommended that a third dose be offered only to the elderly and people with underlying health conditions but not those working in jobs with high risk of Covid-19 exposure.
拜登(Biden)政府大規模接種加強針的計劃再次遭到打擊。美國最高公共衛生機構——美國疾病控制與預防中心(Centers for Disease Control and Prevention)的一個顧問小組建議，只向老年人和患有基礎疾病的人羣提供第三劑疫苗，而在工作中有很高的新冠病毒暴露風險的人羣則不建議接種加強針。
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