What is yellow fever vaccine?
Yellow fever is a serious disease caused by the yellow fever virus. Yellow fever is spread through the bite of an infected mosquito. It cannot be spread from person to person. Yellow fever can cause fever and flu-like illness, jaundice (yellowing of the eyes and skin), liver failure, respiratory failure, kidney failure, vomiting of blood, and possibly death. The yellow fever vaccine exposes the individual to a small amount of the virus (or to a protein from the virus) and causes the body to develop immunity to the disease. Yellow fever is carried and spread by mosquitos. The yellow fever vaccine is used to help prevent this disease in adults and children who are at least 9 months old. This vaccine works by exposing you to a small dose of the virus, which causes the body to develop immunity to the disease. This vaccine will not treat an active infection that has already developed in the body. This vaccine is recommended for people who plan to live in or travel to areas where yellow feve
