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The world is facing the first viral pandemic of the 21st century. It is time, at the end of this first wave and in the core of the second, to take stock of what we have learned about this new virus, the severe acute respiratory syndrome coronavirus 2, our difficulties and shortcomings, but also our successes in managing this major health crisis.

世界正面临21世纪的首次病毒性大流行。在第一波疫情接近尾声、第二波疫情正处于核心阶段之际，是时候总结一下我们对这种新型病毒——严重急性呼吸综合征冠状病毒2（SARS-CoV-2）——的了解，我们遇到的困难和不足，以及我们在应对这一重大健康危机方面取得的成功。