https://www.siliconvalley.com/2021/12/29/covid-cdc-moves-3-more-european-destinations-to-its-highest-travel-risk-category/ > The US Centers for Disease Control and Prevention on Tuesday added three destinations in Europe — from its frigid northern climes to its sun-soaked south — to its highest-risk category for travel. > In its weekly update of Covid-19 travel advisories, the CDC advised against travel to the following countries and placed them in its “Level 4: Covid-19 Very High” category: