中新网客户端北京5月20日电(记者 张尼)70多亿人口受影响、30余万人的生命被夺走……一场来势汹汹的新冠肺炎疫情，成为二战结束以来最严重的全球公共卫生突发事件。
面对肆虐的疫情，人们寄希望于尽早开发出有效的疫苗，摆脱病毒带来的威胁。
如今，多国在研发领域按下“快进键”，中国不仅在进度上是“第一梯队”，更提出新冠疫苗研发完成并投入使用后，将作为全球公共产品。但另一边，美国却在疫苗问题上打起了自己的算盘，引发国际舆论质疑。
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