People most vulnerable to Covid-19 could require a booster of the BioNTech/Pfizer vaccine later this year, according to scientists who said the shot elicited a lower antibody response against the Delta variant first identified in India.
科學家表示,最易感染新型冠狀病毒肺炎(COVID-19,即2019冠狀病毒病)的人羣可能需要在今年晚些時候打一針BioNTech/輝瑞(Pfizer)疫苗的加強針。他們表示該疫苗對首先在印度發現的Delta變體產生的抗體反應較低。
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