Yellow fever is a serious and potentially deadly viral infection which is spread by certain mosquitoes and is most common in parts of Africa and South America. The mosquitoes that spread the disease are most prevalent around human settlements and breed even in very clean water.
Yellow fever symptoms typically begin to emerge about a week after being bitten by an infected mosquito. During the initial stages of the disease, you may notice symptoms including:
These early signs of disease typically resolve within about a week. In the later “toxic” stage of the disease, symptoms can include:
Once the disease enters the toxic phase, death can follow.
The best way to determine if you need to be vaccinated against yellow fever is to have a pre-travel consultation so you can learn about any health risks with which you may come in contact during your travels. Yellow fever vaccinations should be administered at least three weeks to a month prior to travel in order to be most effective. Some countries with yellow fever require travelers to present an official vaccination certificate to serve as proof of vaccination prior to being allowed to enter the country. Travel Health Services is an official Yellow Fever Vaccination Center and is authorized by the World Health Organization (WHO) to validate the International Certificates of Vaccination (ICV).