International regulations require proof of yellow fever vaccination for travelers to and from certain countries. An international vaccination certificate must be obtained, and the vaccine must be administered at least 10 days before entering an endemic area. Some countries may require arriving travelers to show proof of yellow fever vaccination as a public health measure to prevent the virus from being imported. Yellow fever is a common disease in parts of Africa and South America, with approximately 180,000 cases reported each year in Africa alone.
Fortunately, the yellow fever vaccine is highly effective in preventing the disease, and it is rarely contracted by travelers. Therefore, anyone aged 9 months to 59 years who plans to visit these regions should receive one dose of the vaccine. If you have recently traveled and are feeling unwell, especially if you have a fever, it is important to speak with a healthcare provider and inform them of your trip. Additionally, if you plan to travel to parts of South America or Africa where yellow fever is common, or if you work in a laboratory that studies yellow fever, getting vaccinated can protect you from contracting the virus. It is important to note that the yellow fever vaccine is not 100% effective in preventing the disease.
However, it does provide significant protection against the virus and can reduce the severity of symptoms if you do contract it. Additionally, it is important to take other precautions such as avoiding mosquito bites and using insect repellent when traveling in areas where yellow fever is common. If you are planning a trip to an area where yellow fever is present, it is important to consult with your healthcare provider about getting vaccinated. They will be able to provide you with more information about the risks associated with traveling without being vaccinated and can help you decide if it is necessary for your trip.