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\nSince the 1790s, when the English physician Edward Jenner coined the term vaccination (from the Latin vacca for cow) to refer to the use of cowpox to inoculate against smallpox, all subsequent vaccines have relied on the same fundamental principle: antigen specificity. That is, the vaccine mimics a distinctive component of the pathogen — the spike proteins that cover SARS-CoV-2, for example — to prepare the immune system to recognize and react quickly to the real pathogen.
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完善社会民生领域立法。制定突发公共卫生事件应对法，修改传染病防治法，更好保障人民群众生命安全和身体健康。修改食品安全法，牢牢守住食品安全底线。审议检察公益诉讼法、国家消防救援人员法草案。审议医疗保障法、托育服务法、社会救助法草案，依法推进普惠性、基础性、兜底性民生建设。
基于患者安全至上的原则，和黄医药也决定同步益普生全球决策，启动达唯珂在中国内地、港澳地区的撤市与产品召回，停止全部在研临床试验。