Vaccines vs variants: the race to immunise the developing world
疫苗vs變種：爲發展中國家接種疫苗的競賽

The spread of new Covid strains has made it even more urgent to launch rapid vaccination programmes in poorer countries
新毒株的傳播使得在較貧窮國家啓動快速疫苗接種計劃變得更加緊迫。