https://www.cdc.gov/coronavirus/2019-nc ... ation.html
Categories of noncitizen nonimmigrants that meet the criteria for an exception under the Proclamation and CDC’s Order include:
Persons on diplomatic or official foreign government travel
Children under 18 years of age
Persons with documented medical contraindications to receiving a COVID-19 vaccine
Participants in certain COVID-19 vaccine trials
Persons issued a humanitarian or emergency exception
Persons with valid visas [excluding B-1 (business) or B-2 (tourism) visas] who are citizens of a foreign country with limited COVID-19 vaccine availability
Members of the U.S. Armed Forces or their spouses or children (under 18 years of age)
Sea crew members traveling with to a C-1 and D nonimmigrant visa
Persons whose entry would be in the national interest, as determined by the Secretary of State, Secretary of Transportation, or Secretary of Homeland Security (or their designees)
If you travel by air to the United States under one of these exceptions, you will be required to attest that you are excepted from the requirement to present Proof of Being Fully Vaccinated Against COVID-19 based on one of the exceptions listed above.
Based on the category of the exception, you may further be required to attest that:
You will be tested with a COVID-19 viral test 3–5 days after arrival in the United States, unless you have documentation of having recovered from COVID-19 in the past 90 days;
You will self-quarantine for a full 7 days, even if the test result to the post-arrival viral test is negative, unless you have documentation of having recovered from COVID-19 in the past 90 days; and
You will self-isolate if the result of the post-arrival test is positive or if you develop COVID-19 symptoms.
Based on the category of the exception, if you intend to stay in the United States for longer than 60 days you may additionally be required to attest that
You agree to be vaccinated against COVID-19; and
You have arranged to become fully vaccinated against COVID-19 within 60 days of arriving in the United States, or as soon thereafter as is medically appropriate.
A parent or other authorized person should attest on behalf of a passenger under 18 years old. An authorized person may attest on behalf of any passenger who is unable sign their own attestation (e.g., because they are too young, or because of physical or mental impairment). Children under 2 years of age do not need to complete an attestation. As required by United States federal law, all airlines or other aircraft operators will provide and collect the passenger attestation on behalf of the U.S. Government.