Yellow Fever Outbreak in Brazil April 2017 Update

19.05.2017 Category: News Author: Anna Chapman

April 2017 Update

Following the Yellow Fever outbreak in Brazil, the World Health Organisation has now extended the Yellow Fever vaccination area to include:

  • The whole of the state of Rio de Janeiro, including the urban areas of Rio de Janeiro City and Niterói
  • The State of São Paulo, including the urban areas of Campinas, excluding urban areas of São Paulo City
  • Bahia state

If you are headed to Brazil, make sure you receive your Yellow Fever Vaccination from a registered Yellow Fever centre before you go.

What is Yellow Fever?

Yellow fever is a viral illness spread through the bite of an infected Aedes aegypti mosquito. The mosquito is most active between the hours of dawn and dusk<

  • The virus is found in sub-saharan Africa, South and Central America
  • The virus can arise in jungle and urban areas and outbreaks can occur
  • The risk of acquiring Yellow Fever depends upon the destination and risk of exposure to mosquito bites


  • It can take up to 6 days from being bitten by an infected mosquito to becoming symptomatic.
  • Initial symptoms of yellow fever include fever, chills, headache, nausea, muscle aches and weakness. This can progress to high fever and jaundice (yellowing of the skin and eyes), internal bleeding and organ failure.
  • There is no cure for Yellow Fever, and the virus can be fatal in up to 50% of people who have severe symptoms


  • Yellow Fever can be prevented with a single dose of vaccination (STAMARIL)
  • In addition to the vaccination, protection against mosquito bites is important – wear long loose clothing, insect repellent with a minimum of 50% DEET, sleep under mosquito nets, use plug in vaporisers and treat clothes with permethrin
  • The vaccination against yellow fever should be considered for travellers who are going to an area where there is a risk of the disease. A careful assessment at the Fleet Street Clinic will help to determine the risk
  • In addition the vaccination and certificate is required when travelling to certain countries where International Health Regulations require a valid certificate upon entry to the country
  • Failure to provide a valid certificate where required could deny entry to the that country, or result in quarantine
  • The vaccination against yellow fever should be given at least 10 days prior to travel for the certificate to become valid and the vaccine to be effective
  • The vaccination against yellow fever is thought to provide life long protection against the disease
  • The side effects from the vaccination are usually, mild and self resolve. They can include headache, low fever and muscle aches and pains.
  • The Yellow Fever vaccination is a live vaccine, contains ovalbumin (egg protein) so may not be suitable for everyone. The vaccination can safely be given to infants of 9 months of age and adults
  • The risks of the vaccine increase over 60 years of age so it is important that only those who are at risk of Yellow Fever are vaccinated.


    Fleet Street Clinic is a registered Yellow Fever Centre. You can book your appointment online.

    We have over 20 years of experience of delivering the vaccination and always have it in stock, even when it is in short supply elsewhere.