Travel restrictions are changing. See which countries are open to Americans.

While there’s worry over whether Covid-19 cases are on the verge of another surge, vaccinations are rising, and Americans are flying in greater numbers than they have in a year. But not every country is welcoming U.S. citizens.

NBC News is tracking travel restrictions in countries around the world. Here is what travelers need to know, as of May 10:

  • Twenty countries, including Belize, El Salvador and Ghana, are fully open to U.S. travelers and tourists.

  • Fourteen countries are completely closed to Americans, including France, Belgium, Libya and New Zealand.

  • The remaining countries fall somewhere in between, with some offering exceptions for dual-citizens, residents or those with qualifying travel reasons.

  • More than 160 countries require a negative Covid-19 test from travelers.

  • More than 100 countries have some sort of quarantine requirement.

  • More than 80 countries have some sort of curfew in effect.

See the map below for each country’s travel details. This map will be updated in the weeks ahead as circumstances change.

CORRECTION (March 31, 2021, 3:45 p.m. ET): A previous version of the map on this article omitted South Sudan, which became a country in 2011. The map has been republished to include it.