Side effects: The yellow fever vaccine may cause mild side effects such as soreness, redness, or swelling at the injection site, headache, muscle aches, mild fever, or tiredness.
Additional precautions: Protect yourself against mosquito bites by using insect repellent, wearing long sleeves, and sleeping under mosquito nets where needed. Vaccination is especially important when travelling to areas where yellow fever is present. Some countries also require proof of vaccination for entry.
Risks caused by yellow fever: Yellow fever is a serious viral infection spread by mosquitoes. It can cause fever, muscle pain, headache, nausea, and tiredness. In severe cases, it can lead to liver problems, bleeding, organ failure, and death.