What Is Yellow Fever?
7. Risk Factors
Yellow fever is not usually found in the United States and in many other developed countries. Those people that do catch the disease are usually those that live in, or travel to, certain parts of Africa and South America. People that travel to high risk parts of the world without a vaccination are particularly likely to catch the disease.
While anybody can be infected, people with a weakened immune system are more likely to catch the disease. In addition to being more likely to catch the disease, people with a weakened immune system are also more likely to develop serious symptoms.
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