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Yellow Fever What is Yellow Fever?

Yellow Fever is an often serious viral infection, which is spread via the bite of an infected mosquito. The virus is injected into the bloodstream via the saliva of the mosquito as it bites. The virus can then be transported around the body, and it can reproduce itself in a variety of the body's cells ? usually the liver, kidneys and blood vessels.

The disease presents itself after an incubation period of about 3-6 days with flu like symptoms such as aching muscles, fever and sore throat, with death occurring in around 5% of those who become infected. In serious cases, the patient will develop a high temperature and may have a series of after effects, such as internal bleeding, kidney failure and meningitis. There is currently no treatment for Yellow Fever.

Who is at risk of Yellow Fever?

Any traveller to areas where Yellow Fever is endemic (that is: the infection is present in low levels) is at risk. This mainly includes tropical areas of Africa and South America. While the disease is not found in Asia, there is still potential for contraction as the Ades mosquito is here, which is responsible for it's spread. If you are concerned your destination may be in an area with a high risk of Yellow Fever, check out our country guide for more info.

How can I prevent Yellow Fever?

A Yellow Fever vaccination is available within the UK.

A Yellow Fever certificate is the only internationally regulated certificate. The purpose of the certificate is not only to protect the traveller, but to also protect those in areas of the world where infection is possible due to the presence of the Ades mosquito. Many countries require this certificate before granting entry into the country. If you are concerned this may be your destination, check out our country guide for more information.