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| TOP 10 WORLD NEWS STORIES OF 2021 | |
| 摘 要： | COVID-19 Pandemic New COVID-19 variants such as Delta and Omicron flooded the world throughout the year,sparking significantly higher infection rates.Since the first reported infections in December 2019,the world has seen over 280 million confirmed cases,including over 5.4 million deaths,and the administration of over 8 billion vaccine doses,according to the World Health Organization. |
| 关 键 词： | doses FIR NEWS |
| 本文献已被 维普 等数据库收录！ | |