拜登重振了一个被称为 “四方安全对话”（Quad）的集团，成员国包括美国、印度、日本和澳大利亚。中国与这三个美国伙伴的关系都在改善，与英国的关系也是如此。拜登政治遗产能否持久现在已成了问题。在第一任期内，特朗普毫不犹豫地挑战美国的传统合作伙伴。

澳大利亚的这一筛查项目覆盖了约99%的新生儿，主要采用测量婴儿血液中特定生化物质水平的检测方法。基因检测（即对少量DNA进行测序）在这一筛查项目的使用非常有限。

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