CDC adds 7 destinations to 'very high' Covid-19 travel risk list, including Puerto Rico and Switzerland

(CNN) — Switzerland and Puerto Rico are now among the highest-risk destinations for travelers, according to the US Centers for Disease Control and Prevention's regularly updated travel advisories list.

People should avoid traveling to locations designated with the "Level 4: Covid-19 Very High" notice, the CDC recommends. Anyone who must travel should be fully vaccinated first, the agency advises.

Seven destinations moved up on August 30 from the "Level 3: Covid-19 High" list to Level 4:

• Azerbaijan
• Estonia
• Guam
• North Macedonia
• Puerto Rico
• Saint Lucia
• Switzerland   
• ....