What is yellow fever? This tropical disease of viral origin affects mainly humans and monkeys and is transmitted through mosquito bites. In the various stages of the disease, various symptoms occur, including high fever, bleeding and liver failure.
Vaccination is the safest and most effective weapon (protection exceeds 95%) to counter the transmission of a virus that can cause serious complications. It is also mandatory to enter several countries, not only those where the disease is endemic.
The vaccine cycle includes 1 dose, to be administered at least 10 days before potential exposure to the virus. Current information indicates that protection is long-lasting (probably lifelong), so a booster is recommended only in limited cases.
The vaccine consists of live attenuated virus and is administered subcutaneously or intramuscularly. It is given from the ninth month of age.
Method of administration
It is administered subcutaneously or intramuscularly.
Side effects and contraindications
The most common side effects are mild and include pain at the site of injection, fever, headache and muscle pain, which typically pass within a few days. Adverse reactions affecting the nervous system or liver, or replicating the symptoms of the disease, are very rare and are more likely to affect patients older than 60 years or under 6 months of age.
For patients over 60 years of age, an assessment by a medical specialist is recommended.
The vaccine is not recommended for children under 6 months of age, pregnant women, immunocompromised individuals or people who have had severe allergic reactions to the vaccine or its components. In such cases, it is best to avoid travel or, if that is not possible, take extra care to avoid mosquito bites. In the event that your destination requires a vaccine certificate, you must go to one of the authorised centres to receive a vaccine exemption form, which is valid internationally.