The Centers for Disease Control and Prevention 's Tom Skinner says in the last week of December flu was widespread.
美国疾病控制与预防中心的汤姆·斯金纳表示,在12月的最后一周,流感病毒开始传播。
The Centers for Disease Control and Prevention 's Tom Skinner says in the last week of December flu was widespread.
美国疾病控制与预防中心的汤姆·斯金纳表示,在12月的最后一周,流感病毒开始传播。
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