周六，中国发布了第十版新冠肺炎控制协议，强调了疫苗接种和个人防护。该协议由国务院新冠肺炎联合防控机制小组发布，鼓励公众，特别是老年人，主动进行全面疫苗接种和加强注射。该方案表示：“对于高危人群，建议在完成第一剂加强剂后六个月再进行第二剂加强剂。”

Police officers explain to kids how to use safety helmets at a kindergarten in Huzhou, Zhejiang province. XINHUASchool campuses are meant to be places of safety, with an atmosphere of positivity and hope. As the place where students spend m