The Centers for Disease Control and Prevention’s list of countries where Americans should avoid travel because of “very high” COVID-19 cases grew again Monday, with Barbados and Croatia the most notable additions.
Other countries raised to level 4, the agency’s highest travel health alert level: Austria, Armenia, Latvia and New Calendonia. All had been at level 3, which indicates case counts are “high.”
The CDC also lowered travel alert levels for several countries from 4 to 3.
The CDC’s travel alerts, like those from the U.S. State Department, are recommendations, not restrictions. Travelers may continue to fly to the destinations subject to the countries’ COVID-19 restrictions and must provide proof of a negative coronavirus test to board international flights back to the United States, even if vaccinated.
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The CDC assesses COVID-19 risk based on each destination’s new cases and case trajectory. The Travel Health Notice level can be raised if a large increase in COVID-19 cases is reported or a destination’s case count meets or exceeds the threshold for a higher level for 14 straight days. Level 4 destinations have more than 500 new cases per 100,000 people over the past 28 days or more than 500 cases total period if their population is smaller than 100,000.
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This article originally appeared on USA TODAY: CDC adds Barbados, Croatia to ‘avoid travel’ list due to COVID cases