Quick summary
The CDC this week activated enhanced travel screening and entry restrictions tied to Bundibugyo virus and Ebola outbreaks in East and Central Africa, barring non-U.S. passport holders who have been in Uganda, the Democratic Republic of Congo, or South Sudan within the previous 21 days from entering the United States. The measures are coordinated with the Department of Homeland Security, airlines, and port-of-entry officials. An Air France flight from Paris to Detroit was reportedly diverted to Montreal amid these new rules — a real-time illustration of how the policy can play out at 35,000 feet.
The cause of the specific diversion has not been officially confirmed, and the CDC restrictions do not apply to U.S. passport holders. Travelers with recent travel to the three named countries face the highest risk of disruption on any U.S.-bound flight.
A Boeing 777-200 operating as Air France flight AF378 from Paris Charles de Gaulle to Detroit Metropolitan was reportedly diverted to Montreal-Trudeau on Wednesday, May 20, with passengers told mid-flight that U.S. authorities were not permitting the aircraft to land in the United States. Crew members put on masks, onboard service was suspended, and passengers were instructed to remain seated pending clearance from Canadian authorities. A later announcement confirmed there were no mechanical issues — the diversion was, according to the crew, solely at the direction of U.S. authorities.
The incident comes directly after the CDC announced sweeping new entry measures this week in response to active Ebola-related outbreaks in East and Central Africa. Whether the reported AF378 diversion was triggered by those measures has not been officially confirmed, but the timing is not coincidental.
The practical risk for travelers is now concrete: any U.S.-bound flight carrying passengers who may meet the CDC’s risk criteria — recent presence in Uganda, DRC, or South Sudan — can be subject to last-minute rerouting, extended ground holds, or health screening delays, regardless of where the aircraft originated.
Air France is expected to operate the aircraft onward from Montreal to Detroit after ground-level assessment. The full passenger impact — rebooking, delays, care obligations — remains unresolved as of publication.
What the new CDC measures actually require
The CDC’s announcement, coordinated with DHS and CBP, establishes entry restrictions specifically targeting non-U.S. passport holders who have been in Uganda, the Democratic Republic of Congo, or South Sudan within the previous 21 days. U.S. citizens are not subject to the entry ban, though they may face enhanced screening at ports of entry. The measures also include border screening, contact tracing, and PPE deployment at affected locations — a layered response that extends well beyond a simple travel advisory.
Critically, the framework gives U.S. authorities the legal basis to act on a passenger manifest before an aircraft lands. Under 42 CFR Parts 70 and 71, the CDC can restrict aircraft entry or require diversions when a communicable-disease threat is suspected. That is the mechanism that, in a scenario like the reported AF378 diversion, would allow authorities to redirect a flight to Canadian soil — where the passenger can be assessed and immigration rules applied outside U.S. jurisdiction.
The full CDC announcement on the Ebola entry measures details the coordination structure across agencies and airlines.
| Measure | Who it applies to | Scope / detail |
|---|---|---|
| Entry restriction | Non-U.S. passport holders | Travel to Uganda, DRC, or South Sudan within previous 21 days |
| Enhanced border screening | All arriving passengers on flagged routes | Coordinated with CBP at U.S. ports of entry |
| Airline coordination | Carriers operating U.S.-bound routes | Pre-departure manifest checks, PPE protocols, contact tracing support |
| In-flight diversion authority | Any aircraft with flagged passenger | CDC/DHS can redirect aircraft before U.S. landing under 42 CFR 70/71 |
| PPE deployment | Port-of-entry and airline crew | Masks and protective equipment at affected screening locations |
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Why a government-ordered diversion changes your rights — and your options
When a diversion is ordered by public authorities rather than caused by an airline’s own operational failure, passenger rights frameworks treat it differently — and less generously. Under EU Regulation 261/2004, which applies to AF378 because it departed from Paris, government-mandated health diversions are classified as “extraordinary circumstances.” That means Air France owes no cash compensation. It does, however, owe care: meals, accommodation if an overnight stay is required, and rebooking to the final destination. The regulation is unambiguous on this — extraordinary circumstances suspend the compensation obligation, not the duty-of-care obligation.
Canada’s Air Passenger Protection Regulations reach the same result from a different direction. Diversions classified as “required for safety purposes” — which includes those ordered by public authorities — fall outside the standard compensation framework. Rebooking and assistance still apply.
For passengers who paid with a premium travel card, there is a parallel recovery path. A diversion causing a delay beyond six hours or requiring an overnight stay can trigger trip delay coverage on cards like the Chase Sapphire Reserve or Amex Platinum — covering lodging and meals up to the per-trip limit. Keep every receipt and every piece of written documentation the airline provides. That paperwork is the claim.
Steps to take now if your flight is affected
The CDC restrictions are active and enforcement is already producing real-world disruptions — the reported AF378 diversion is the clearest evidence yet. These steps apply in priority order.
- Check your travel history against the 21-day window. If you are a non-U.S. passport holder and have been in Uganda, the Democratic Republic of Congo, or South Sudan within the past three weeks, contact Air France reservations before going to the airport. Denial of boarding to the U.S. segment is possible under current CDC rules.
- Confirm your itinerary in Air France “My Bookings.” Use airfrance.com or the mobile app to verify your routing has not changed. If you are already rerouted, request digital vouchers for any care expenses directly through the app or at the Air France desk.
- Document everything in writing. If you experience a diversion or extended delay, ask the airline for written confirmation of the cause. This document is required for both an EU261 care claim and any credit card trip delay or interruption claim.
- File card benefits claims promptly. Chase Sapphire Reserve trip delay coverage activates after a six-hour delay or overnight stay. Amex Platinum trip delay insurance applies when a covered reason causes a qualifying delay on a round-trip paid with the card. Submit through each issuer’s online benefits portal with airline documentation attached.
- Review the CDC advisory directly. The CDC Ebola and Marburg traveler health page carries current guidance on affected countries and screening requirements.
Watch: The CDC’s next update to its Ebola/Bundibugyo entry restrictions page — expected within days as field data from Uganda and DRC evolve. If the list of restricted countries expands, diversion risk rises sharply across all U.S.-bound routes from Europe. If language is toned down, disruption is more likely to remain case-specific.
Questions? Answers.
Was the Air France AF378 diversion definitely caused by the CDC’s Ebola restrictions?
The cause has not been officially confirmed. Passengers reported crew wearing masks and a crew announcement referencing “a virus,” and a later announcement stated the diversion was solely at the direction of U.S. authorities. The diversion occurred days after the CDC activated new Bundibugyo/Ebola entry measures — but whether a specific passenger triggered those restrictions, or another health concern was involved, has not been established by any official statement.
Does the CDC entry restriction apply to U.S. citizens who traveled to Uganda, DRC, or South Sudan?
No. The current entry restriction applies to non-U.S. passport holders who have been in Uganda, the Democratic Republic of Congo, or South Sudan within the previous 21 days. U.S. citizens are not subject to the entry ban, though they may face enhanced screening at ports of entry upon return.
Am I entitled to compensation if my flight is diverted because of the CDC health measures?
Almost certainly not in cash. Under EU Regulation 261/2004 — which applies to flights departing from EU airports like Paris CDG — government-ordered health diversions are classified as extraordinary circumstances, suspending the cash compensation obligation. However, Air France must still provide care: meals, hotel accommodation if required, and rebooking to your final destination. Canada’s Air Passenger Protection Regulations reach the same conclusion for the Montreal ground stop. Your best additional recovery path is through credit card trip delay or interruption benefits if you paid with an eligible card.
Which flights are most at risk of similar diversions?
Any U.S.-bound flight — particularly from Europe, the Middle East, or Africa — that carries passengers who may meet the CDC’s risk criteria is potentially subject to the same intervention. Transatlantic routes from major European hubs (Paris, Amsterdam, Frankfurt, London) are the most exposed given their passenger mix. Flights originating in or connecting through East African hubs face the highest scrutiny.
