Pfizer and BioNTech have enrolled the first participants in a clinical trial of a vaccine tailored to the Omicron coronavirus variant as the companies weigh whether they need to replace their existing Covid-19 jab.
輝瑞(Pfizer)和BioNTech爲專門針對新冠病毒Omicron變種的疫苗的臨牀試驗招募了第一批參與者。兩家公司正在權衡是否需要更換其現有的新型冠狀病毒肺炎(COVID-19,即2019冠狀病毒病)疫苗。
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