The two biggest developments since the onset of the Covid-19 pandemic occurred within weeks of each other late last year. One was the arrival of effective vaccines. The other was the emergence of virus variants that threaten to defeat them. A global race is now under way between the two. Which comes out on top will determine when — or if — the virus can truly be tamed. And the race will not be properly won unless it is won all around the world.
自新型冠狀病毒肺炎（COVID-19，即2019冠狀病毒病）疫情爆發以來的兩個最大動向在去年底前後腳發生，相隔僅數週。一個是有效疫苗的到來。另一個是可能使疫苗失效的病毒變種的出現。兩者正在全球範圍內進行賽跑。哪個取得勝利，將決定新冠病毒何時——或是否——能真正被馴服。而且，除非疫苗在全世界範圍內跑贏病毒突變，否則它就不算真正贏了。
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