Yellow fever is a serious viral infection spread by mosquitoes in parts of Africa and South America. It can cause mild flu-like symptoms or lead to severe complications, including organ failure and death. The best protection against the disease is the yellow fever vaccination, which provides long-term immunity with a single dose.
Many countries require proof of vaccination for travellers entering from affected areas. Since there is no cure for yellow fever, prevention is key. If you are planning to visit a high-risk region, getting vaccinated in advance is essential for your safety and to meet travel health requirements.
What Are the Symptoms of Yellow Fever?
Yellow fever symptoms usually appear within three to six days after a mosquito bite. In mild cases, symptoms include:
- Fever
- Headache
- Muscle pain
- Nausea or vomiting
- Fatigue
Some people recover within a few days, but in severe cases, the infection can lead to a second, more dangerous phase. This can cause:
- High fever
- Jaundice (yellowing of the skin and eyes)
- Liver and kidney failure
- Bleeding from the nose, mouth, or stomach
There is no specific cure for yellow fever. Treatment focuses on relieving symptoms and supporting the body while it fights the virus.
How to Protect Yourself from Yellow Fever
The best way to protect yourself from yellow fever is through vaccination. A single dose of the yellow fever vaccine provides lifelong protection in most cases. It is recommended for travellers visiting countries where the virus is present and may be required for entry into certain destinations.
Are There Any Yellow Fever Vaccine Side Effects?
The yellow fever vaccination is generally safe and effective. However, like all vaccines, it can cause side effects. Most are mild and go away on their own, such as:
- Soreness at the injection site
- Mild fever
- Headache
- Muscle aches
Serious side effects are rare but can include severe allergic reactions. It is important to discuss your medical history with a yellow fever clinic before getting the vaccine.