Last Updated：2025/12/06
Sentence
研究者たちは、ワクチン未接種者の間で、SARS-CoV-2ウイルスの高い病原性を持つB.1.617.2系統がより急速に広がる可能性があると警告した。
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Scientists warned that the Delta variant could spread more rapidly among unvaccinated populations.
See correct answer
Scientists warned that the Delta variant could spread more rapidly among unvaccinated populations.
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