正しい答えはこれだな。季節性で増大、変異で減少:東京都のコロナ新規感染者数 7-9月が「6.9倍と急増→24分の1へと急減」した理由 #SmartNews https://bit.ly/3kZ3SlL



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October 01, 2021 at 06:19AM
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