Schedule: People (older than 9 months of age) should only be vaccinated if they are at risk of exposure to yellow fever virus or require proof of vaccination for country entry. A single dose of vaccine is effective in providing protection from yellow fever.
The yellow fever virus is found in tropical and subtropical areas of Africa and South America. The virus is spread to people by the bite of an infected mosquito. Yellow fever is a very rare cause of illness in U.S. travelers. Illness ranges from a fever with aches and pains to severe liver disease with bleeding and yellowing skin (jaundice). Yellow fever infection is diagnosed based on laboratory testing, a person’s symptoms, and travel history. There is no medicine to treat or cure infection. To prevent getting sick from yellow fever, use insect repellent, wear long-sleeved shirts and long pants, and get vaccinated.
CDC provides information about the disease and vaccination.
Information for travelers
Vaccines.gov provides resources from federal agencies for the general public and their communities about vaccines across the lifespan.
Children’s Hospital of Philadelphia provides questions and answers about yellow fever from the Vaccine Education Center.