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The UK’s chief science adviser suggested allowing the coronavirus to spread to build immunity. Government ministers said they’ll promote self-isolation instead. 英国首席科学顾问建议让冠状病毒传播来获得群体免疫。部长们说要采取相反的措施，鼓励自我隔离。 The United Kingdom is previewing a new self-isolation plan for all people over 70 to address the spread of the novel coronavirus in the country, following backlash over a proposal to promote immunity by allowing up to 60 percent of its population to become infected. 英国正在测评针对所有70岁以上的人的新的自我隔离计划，来阻止新型冠状病毒在该国传播。此前曾有过让60%的国人感染病毒来形成群体免疫的提议，遭到了强烈反对。 Last Friday, the UK government’s chief science adviser, Sir Patrick Vallance, said on BBC Radio 4 that one of “the key things we need to do” is to “build up some kind of herd immunity so more people are immune to this disease and we reduce the transmission.” 上周五，英国政府的首席科学顾问帕特里克·瓦兰斯爵士在BBC Radio 4上说“我们需要做的很重要的一件事”就是要“建立一种群体免疫，让更多的人对这种疾病免疫，从而减少传播。” But last Sunday, Matt Hancock, the UK secretary of state for health and social care, stressed that achieving herd immunity to Covid-19 is not a stated policy. Instead, he said that “in the coming weeks,” people over the age of 70 will be told to self-isolate. This stands in contrast with World Health Organization guidelines, which recommend that everyone, regardless of age, practice social distancing. | 
