“史无前例”
用英语怎么说？

Health officials have described a recent outbreak of invasive meningitis in Kent as unprecedented, following the tragic deaths of a university student and a sixth-form pupil. The UK Health Security Agency noted the explosive nature of the transmission, marking it as one of the fastest-growing clusters observed in recent medical history. Health authorities suspect that a superspreader event occurred within university residential halls, where frequent social gatherings facilitated rapid bacterial transmission. In response to the rapidly developing situation, officials declared a national incident to mobilize emergency antibiotic supplies and coordinate regional containment.

在一名大学生和一名高中生不幸身亡后，卫生官员称肯特郡近期暴发的侵袭性脑膜炎疫情是史无前例的。英国卫生安全局指出了该疫情传播的爆发性特征，称其为近年医疗史上发展最迅猛的聚集性感染之一。卫生部门怀疑大学宿舍区内发生了一起超级传播事件，频繁的社交聚会加速了细菌传播。面对这一迅速发展的局势，官方宣布进入国家级事件响应，以调动紧急抗生素储备并协调区域防控。