为了开展冬奥会新冠疫情输入性风险评估研究,通过对世界卫生组织(World Health Organization,WHO)《突发公共卫生事件快速风险评估手册》(简称《WHO评估手册》)和欧洲联盟疾病预防与控制中心(European Centre of Disease Prevention and Control,ECDC)技术文档《快速风险评估方法操作指南(欧盟CDC)》(以下简称《ECDC操作指
The coronavirus outbreak led to the cancellation of many live events, such as concerts and music festivals, to the dismay of many festival-goers. If almost 70 percent of music festivals held in 2021 w
We compiled criteria pollutants from four air quality monitoring stations in Bogotá, eight in Santiago, and five in São Paulo to characterize the impact of emission changes on air quality during the e