You may need vaccination because yellow fever is a risk at your destination, because a country requires proof of vaccination, or both. Your complete itinerary, including airport transit, should be assessed using current destination guidance.

Yellow fever transmission occurs in parts of sub-Saharan Africa and tropical Central and South America. Risk is not uniform across every country, and recommendations can change, so advice must be checked for your precise route.

For a first vaccination, the international certificate normally becomes valid 10 days after the injection. Arrange your consultation well before departure whenever possible, especially if you have medical conditions or a complex itinerary.

Under the International Health Regulations, a valid yellow fever certificate is accepted for the life of the vaccinated person. Existing valid certificates should not be altered, even if they originally show a ten-year expiry date.

A booster cannot routinely be required for international certificate purposes. However, a small subset of travellers may be advised to receive an additional dose following an individual clinical assessment.

No. In the UK, yellow fever vaccine can only be administered at a designated Yellow Fever Vaccination Centre, which is authorised to complete the International Certificate of Vaccination or Prophylaxis.

The vaccine is unsuitable for some people, including infants under six months and certain people with severe allergies, immune suppression or a history of thymus disorder or thymus removal. Other travellers require careful individual risk assessment.

People aged 60 or over require careful assessment because rare serious vaccine reactions are more likely in this age group. The decision depends on health, itinerary, exposure risk and certificate requirements.

Pregnancy is a precaution. Vaccination may sometimes be considered when travel to a genuine risk area is unavoidable and the expected benefit outweighs the potential risk. A specialist or designated-centre assessment may be needed.

If vaccination is medically unsuitable, changing or postponing travel may be discussed. Where a certificate is required, a designated centre may consider issuing a Medical Letter of Exemption after an individual assessment, but acceptance at the border cannot be guaranteed.

Common effects can include injection-site discomfort, headache, muscle aches, tiredness or a mild temperature. Serious neurological or organ-related reactions are rare but require urgent medical attention.

No. Continue using repellent, suitable clothing, screened accommodation and mosquito nets where appropriate. These precautions help reduce exposure to yellow fever and other mosquito-borne infections.

Bring your full itinerary, passport details where requested, departure date, medication list and previous vaccination records—especially any earlier yellow fever certificate. Do not amend an existing certificate yourself.

Short-notice appointments may sometimes be available, subject to designated-centre service availability, pharmacist availability, vaccine stock and clinical suitability. Remember that a first certificate does not become valid until 10 days after vaccination.

The clinic is based inside Allchin Pharmacy at 28 Englands Lane, London, NW3 4UE, convenient for Hampstead, Belsize Park, Swiss Cottage, Finchley Road, St John’s Wood and surrounding North West London areas.