本次纪念活动是在世界抗击COVID-19疫情的时候举行的。这场大流行病在世界上造成了前所未有的健康危机，其影响包括全球和各国的卫生系统。
This commemoration comes at a time when the world is dealing with the COVID-19 pandemic. The pandemic has created an unprecedented health crisis in the world, the repercussions of which include the global and other health systems.