另外一个USAToday的 link，更权威些。

来源: 菜鸟show 于 2022-03-30 22:24:15 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

www.usatoday.com/story/travel/cruises/2022/03/30/cdc-covid-cruise-travel-risk-assessment/7214943001/

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