Yellow Fever certificate (ICVP): which countries actually require it in 2026

What the ICVP actually is

The ICVP is an internationally recognised yellow document issued under the World Health Organization International Health Regulations (IHR 2005). The current version was updated in 2007. It records the date of vaccination, the vaccine batch number, the stamp of a designated Yellow Fever centre, and the signature of the administering clinician. It is one of the few medical documents that can result in you being denied boarding or quarantined at a destination airport.

Crucially, the ICVP is only valid for vaccines listed in the WHO IHR — and at present, Yellow Fever is the only routine travel vaccine to which the ICVP framework applies. There is no ICVP for typhoid, cholera or hepatitis A.

The 2016 lifetime validity amendment

For years, the YF certificate was treated as valid for 10 years and many countries required a within-10-years booster. In May 2016, the WHO adopted an amendment recognising that a single dose of Yellow Fever vaccine provides lifelong protection. This is now reflected in IHR Annex 7: a single dose gives lifetime certificate validity. Border officials should accept any valid certificate regardless of how long ago the vaccine was given.

In practice, this transition is now fully embedded — but very occasionally a border official will be unaware. We advise carrying a clean printed certificate and not relying on a digital photograph.

Mandatory entry requirements

A handful of countries require the ICVP for entry from every traveller, regardless of country of origin. The list is reviewed annually by NaTHNaC and the WHO. For 2026, the most prominent are:

• French Guiana — all travellers from 12 months of age.
• Ghana, Cameroon, Central African Republic, Republic of Congo, DRC, Sierra Leone, Togo, Mali, Burkina Faso, Niger, Benin, Côte d'Ivoire, Liberia, Gabon — most require the certificate from all travellers from 9 months or 12 months of age depending on the country.
• Angola, Uganda and Rwanda — required for all travellers from 9 months or 12 months of age.

These are countries that either have endemic transmission or border endemic regions, and they treat the certificate as a public health import control. Always check the live NaTHNaC entry for your destination at TravelHealthPro before you fly.

Transit and conditional requirements

Many more countries apply conditional requirements: you only need the certificate if you have transited through, or visited, a YF risk country in the days before arrival. This catches travellers off guard. Examples for 2026:

• India requires the certificate from travellers arriving from a YF-risk country (including transit longer than 12 hours). A traveller flying London → Nairobi → Mumbai is in scope.
• South Africa, Kenya and Tanzania require the certificate from travellers arriving from YF-risk countries.
• Egypt, Algeria, Jordan, Iran and Saudi Arabia apply conditional requirements depending on prior travel.
• China and Indonesia apply conditional requirements similar to India.

The trap: a London → Nairobi → Bali itinerary triggers the certificate for Bali, even though Bali itself is not a YF country. Plan ahead — we see travellers told to turn back at the gate every year.

For destination-specific advice, see our country guides for Colombia, Thailand, India and Pakistan.

Exemption letters

If the Yellow Fever vaccine is medically contraindicated, a NaTHNaC-designated centre can issue an exemption letter (also known as a medical letter or exemption certificate). The standard contraindications are:

• Age under 9 months — never vaccinate, never exempt; consider deferring travel.
• Age 60 and over — relative contraindication; vaccinated only where benefit clearly outweighs risk of yellow fever vaccine-associated viscerotropic disease (YEL-AVD).
• Immunosuppression — including chemotherapy, high-dose steroids (≥20 mg prednisolone/day for >14 days), biologic therapy, HIV with CD4 <200, and most transplant recipients.
• Thymus disorders — myasthenia gravis, thymoma, prior thymectomy. These carry a substantial risk of YEL-AVD.
• Severe egg allergy — Stamaril is grown in chick embryos.
• Pregnancy and breastfeeding — relative; see our guide on pregnancy travel vaccines.

The exemption letter must be written by a designated Yellow Fever centre, signed and stamped, dated, and reference the medical reason. Some countries (notably Saudi Arabia for Hajj) require the exemption letter to be in English or Arabic and to bear the centre's stamp. It is occasionally — but not always — accepted at the border, and we counsel patients that an exemption letter is not a guaranteed pass.

Stamaril and where it can be given

Stamaril is the only Yellow Fever vaccine licensed in the UK. It is a live attenuated 17D-204 strain vaccine and is supplied only to centres designated by the NaTHNaC Yellow Fever Vaccination Centre programme. The clinician administering it must be registered with NaTHNaC, complete annual updates, and follow protocols for cold chain, contraindication screening and certificate issue. Trafford Clinic is a designated centre.

You should plan to receive the vaccine at least 10 days before you intend to enter a country with a mandatory requirement — the certificate is not valid until day 10 after the first dose. This is the rule that catches most last-minute travellers.

Common mistakes

• Leaving it too late — the 10-day rule cannot be waived; if you have eight days before flying, you cannot enter a mandatory country with a valid certificate.
• Relying on a photo — digital photographs of the ICVP are not yet universally accepted. Carry the original.
• Forgetting transit history — passenger declarations about prior travel are checked at some borders. A bona fide transit of more than 12 hours can trigger a certificate requirement.
• Believing the 10-year rule is still active — it is not. A 1995 certificate is still valid in 2026.
• Confusing with malaria prevention — the YF certificate does not protect against malaria. See malaria tablets compared and our malaria prevention page.

How we run your YF appointment

Haroon takes a focused medical history covering immune status, age, thymus history, egg allergy and pregnancy. We administer Stamaril into the deltoid, complete the ICVP with the centre's stamp, and hand it to you with your other travel documentation. Side effects are usually mild (sore arm, low-grade fever for 24–48 hours); the very rare serious adverse events — YEL-AVD and YEL-AND — are flagged in the consent process. We also coordinate Yellow Fever with any other vaccines you need, including hepatitis B, typhoid, hepatitis A and meningococcal ACWY for travellers heading on to Hajj.

Book at our Manchester travel clinic, or via local pages including Old Trafford, Rusholme, Sale and Altrincham.