瑞士自由行 交通關於「Swiss travel restrictions」標籤，搜尋引擎有相關的訊息討論：
COVID-19 Information - US Embassy in Switzerland and Liechtenstein5 天前 · Requirements for travel to the United States. As of December 6, all air passengers, regardless of vaccination or citizenship status, ...缺少字詞： gl= twSwitzerland - Ministry of Foreign Affairs SingaporeAs vi