Do I need a Yellow Fever vaccine for an Addis Ababa layover?

For any traveler heading to the Seychelles with a layover in a country at risk of Yellow Fever transmission—most notably Ethiopia when flying with Ethiopian Airlines—the 12-hour rule is the critical factor. If your layover in Addis Ababa exceeds **12 hours**, a Yellow Fever vaccination certificate is mandatory for entry into the Seychelles, even if you never leave the airport's international transit area. Because a 13-hour layover exceeds this threshold, you must be vaccinated and carry proof to avoid being denied boarding or entry.

The Seychelles Ministry of Health requires the International Certificate of Vaccination or Prophylaxis (the "Yellow Book") to be presented upon arrival. While the Seychelles Travel Authorization (SETA) process requires you to upload a digital scan of this document during your application—which typically costs **SCR 150-200** for standard processing—the digital copy is not sufficient on its own. You must carry the **physical original certificate** in your hand luggage. Airlines are legally obligated to check this at the boarding gate in Addis Ababa, and Port Health officers at **Seychelles International Airport** (Pointe Larue, Mahé) will often perform secondary checks before you reach immigration.

Timing is equally important: the vaccine must be administered at least **10 days before your arrival** in the Seychelles to be considered valid. If you arrive at the airport without a valid certificate after a long layover, you risk being denied entry or placed in a quarantine facility. The costs for such measures are the responsibility of the traveler and can reach several thousand **SCR** depending on the duration of stay and medical monitoring required.

**Pro Tips from Locals:** - If your scheduled layover is close to the limit (e.g., 11 hours), it is safer to get the vaccine anyway. Flight delays are common, and if an unexpected delay pushes your transit time past 12 hours, the health requirement becomes active instantly. - Ensure your name on the certificate matches your passport exactly. - For those already in the Seychelles needing the vaccine for onward travel to other African nations, the Yellow Fever jab is available at private clinics in **Victoria** and costs approximately **SCR 1,000-1,400**. - Always double-check the 'Transit' section of your SETA application; if you tick 'Yes' for a long transit but don't provide the certificate, your entry permit will likely be rejected.

This health requirement is a cornerstone of Seychelles' biosecurity, designed to protect the fragile island ecosystem. Once you have cleared Port Health at Mahé, you are free to travel onward to **Praslin**, **La Digue**, or any of the outer islands without further health checks. Keep your certificate safe throughout your trip, as you may also be asked for it if you are continuing your journey to other destinations in the Indian Ocean or Africa. Combining your health documentation with a printed copy of your SETA approval will ensure the smoothest possible transition through the airport.