· Vaccinate against COVID-19 before flying to Mauritania.

• Avoid Mauritania if you’re not up-to-date on COVID-19 immunizations.

• Even if you’re vaccinated for COVID-19, you may still acquire and spread it.

• Anyone 2 or older should wear a mask inside.

• If you have a poor immune system or are at risk for serious illness, chat with your doctor about your risk and defer going to Mauritania.

• Follow Mauritania’s guidelines.

COVID-19: Special Situations





Learn how CDC sets COVID-19 travel health alerts.

Travel notifications for COVID-19.

Follow before, during, and after foreign travel regulations.

Don’t procrastinate

· Vaccinate against COVID-19 before traveling.

• Follow airline and destination rules, including mask use, immunization, testing, and quarantine.

• Get a viral test as soon as possible before the trip (no more than 3 days).

• Non-U.S. passengers may have different requirements. If you don’t obey your destination’s rules, you may be sent home.

• Everyone 2 years or older—passengers and workers—should wear a well-fitting mask or respirator in public transportation (airplanes, trains, buses, ferries) and transportation hubs (airports, stations, seaports), particularly in busy or poorly ventilated places like airport jetways.


• You have COVID-19 symptoms, even if you healed in the prior 90 days or are vaccinated.

COVID-19 was detected.

o, Don’t travel until 10 days after your symptoms began or the day your positive test was obtained.

• You’re awaiting COVID-19 findings.

o If your test is positive at your destination, you must isolate yourself and delay your return until it’s safe. They may need to quarantine.

You had close touch with a COVID-19 patient who should quarantine.

o, Don’t travel for 5 days following your last interaction with COVID-19. 10 days after last exposure, avoid travel.

o If you must travel 6-10 days after last exposure:

Test 5 days after last close touch. Check your test results and symptoms before flying. If you don’t get tested, don’t travel for 10 days following your last COVID-19 interaction.

Wear a well-fitting mask on days 6-10 of travel. If you can’t wear a mask, don’t travel from June 6-10.

If you have intimate contact with a COVID-19 patient but aren’t quarantined…

• Get tested 5 days after close contact. Check your test results and symptoms before flying.

o If you’ve had COVID-19 in the prior 90 days, you don’t need to get tested. Follow all other instructions (including getting tested if you develop COVID-19 symptoms).

· Wear a well-fitting mask for the whole 10 days following your last exposure if you travel. If you can’t wear a mask, don’t travel.



Before boarding an aircraft in the US, you must demonstrate a negative COVID-19 test result from the previous day. People who’ve recovered from COVID-19 in the previous 90 days have another alternative. Learn the rules.

Non-citizen, non-immigrant vaccination

Nonimmigrants (not U.S. citizens, U.S. nationals, legal permanent residents, or traveling on an immigrant visa) must produce documentation of having properly vaccinated against COVID-19 before flying to the U.S. from a foreign country. Discover this need.


All U.S. aviation passengers must provide airline contact information before boarding.

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A tool to check US flight regulations.

Begin: After US Arrival

• Get a COVID-19 test 3–5 days after arrival.

Find a U.S. COVID-19 testing centre.

· Self-monitor COVID-19 symptoms; get tested if you do.

• Follow state, tribal, municipal, and territorial instructions following arrival.

• If you’re not up-to-date on COVID-19 immunizations, self-quarantine for 5 days following arrival.

• Non-U.S. citizens who are non-U.S. immigrants may be needed to complete further measures after arriving.

If you test positive for COVID-19 or develop symptoms, isolate yourself to protect others. Learn when to be with people.

COVID-19 Survivors

Unless you acquire new symptoms, you don’t need to get checked if you had COVID-19 in the prior 90 days and recovered. No self-quarantine is required after arrival.

Isolate and test everyone arriving with COVID-19 symptoms. Isolate till findings are known. In public, wear a mask.

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