Infected mosquitoes contract the virus from monkeys, and sometimes infected humans. This can take place in the jungle, the city (urban) or anywhere in between. Infection occurs in Africa (Sub-Saharan) and South America.
A few days after the bite, symptomatic patients will have flu-like symptoms that can progress to jaundice (yellowish or lemon discoloration of the skin and eyes), bleeding and failure of organs. Up to half of those will not survive.
The best way to avoid yellow fever is following our Mosquito Safety practices and vaccination. The latter is very effective with protection lasting 10 years.
In Ontario, only centers designated by the Public Health Agency of Canada can administer yellow fever vaccine. Burlington Travel Clinic is certified yellow fever vaccination center.
For more information, please visit:
http://www.phac-aspc.gc.ca/tmp-pmv/yf-fj/clinic-clinique/on-eng.php
Certain countries need proof of vaccination by a designated yellow fever centre to grant access to travellers. Your travel doctor will provide you with the appropriate documentation after giving you the vaccine.