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replied 1,028 days ago｜originally written by Wei Lun Chiang

正確。科學家用受試者的血清，觀察抗體是否能對抗來自英國（B.1.1.7）、南非（B.1.351）的突變病毒。實驗顯示疫苗仍可提供保護，但莫德納疫苗面對來自南非的突變病毒時，效力下降，因此已展開新疫苗的研究 [1]。

參考文獻：
1. 蔣維倫 (2021) 今晚，你想打那支？新冠病毒疾病（COVID-19）疫苗們的保護力。泛科學

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