Date: July 16, 2019

Mainly cloudy with 60 percent chance of showers. Risk of a thunderstorm this afternoon. Wind southwest 20 km/h gusting to 40. High 29. Humidex 37. UV index 7 or high.


Feels like 36C

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Travel Immunization Links


Immunization Clinics

Yellow Fever Vaccine

This page was reviewed or revised on Thursday, July 21, 2016 4:01 PM

Environmental Health & Prevention Services

What is Yellow Fever?

  • A viral disease of short duration and sudden onset which can cause fever, chills, muscle and joint aches, jaundice, nausea, vomiting, and prostration. The fatality rate can be from 20 up to 50% in some population groups.
  • Usually acquired from day-biting mosquitoes that spread the disease from monkeys to people, or person to person.
  • No specific treatment, only supportive measures.

Indications for Yellow Fever Vaccine

  • This is a REQUIRED vaccine for travellers 6 months of age or older who are travelling through or to specified countries in South America or Africa where Yellow Fever is endemic.
  • This vaccine may also be REQUIRED for entry into some countries if the traveller is coming from an area or country considered a Yellow Fever endemic area.
  • Under International Health Regulations, a Yellow Fever Certificate of Vaccination is valid ten days after vaccination.
  • This vaccine is only available at sites approved by the Public Health Agency of Canada (PHAC).


  • One injection gives immunity for up to 10 years.


  • Do not give to persons with severe allergy to any vaccine component, and especially persons with severe allergy to egg or chicken protein.
  • Do not give to persons with compromised or damaged immune systems due to disease (Thymus Disease, HIV, etc.) or drug or radiation therapy.
  • Do not give to children under 6 months of age or to pregnant or breastfeeding women, unless travelling to high-risk areas is unavoidable.
  • Vaccination for those over 60 years of age should be given only if travelling to high-risk areas is unavoidable.
  • Vaccination should be deferred for three months following blood or plasma transfusion.

Adverse reactions

  • Approximately 10% of clients develop fever or malaise 7 - 14 days following immunization. Symptoms may last up to 1 - 2 days. Treatment should be symptomatic.

A severe allergic reaction, although rare, may occur following the use of this or any vaccine. Therefore it is necessary to remain in the building for at least 15 minutes after receiving your injection.

Any serious reaction to vaccines should be reported to your family physician and to Lambton Public Health.