A Signature, Not a Ban: CDC's Ebola Rule Reaches Every U.S.-Bound Boarding Gate

The CDC issued an order on Oct. 22, 2026, amended Oct. 28, requiring every person boarding an international flight to the United States to attest they have not been in the Democratic Republic of the Congo in the 21 days before departure. It took effect at 11:59 p.m. EST on Nov. 3, applying to flights departing at or after that time.

The rule is not a blanket ban on flights or on travelers. It is a screening requirement keyed to Ebola's maximum incubation period — 21 days between exposure and symptoms — and it reaches further than the outbreak zone itself. All air travelers, including crew, flying into or connecting through the United States must sign the attestation.

The consequences differ by status. Travelers who have been in the DRC within 21 days before departure, including U.S. citizens and U.S. nationals, will not be allowed to board U.S.-bound flights and should plan to remain outside the United States for at least 21 days after leaving the DRC. Non-U.S. citizens and non-U.S. nationals, including lawful permanent residents, who have been in South Sudan or Uganda within 21 days before departure will not be allowed to enter the United States.

The CDC said the attestation is a public health measure intended to reduce the risk of Ebola being introduced into the U.S. through air travel, and that the overall risk to the American public and travelers remains low.

For readers, the practical takeaway is narrow but firm: if you have been in the DRC in the past three weeks, you cannot board a U.S.-bound flight, and you should plan for a 21-day wait outside the country before you can. The burden falls on travelers to document where they have and have not been.