Dr. Gao, director-general of the China CDC: "Maybe by September we might have a vaccine to be used in emergency… If we have some emergency outbreak again, new developed vaccine still under phase two or phase three clinical trials, it can be used for some special groups, for example health care worker."
原标题：疾控中心主任高福：新冠疫苗九月或有望可以紧急使用
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