For the prevention of Yellow fever, a single vaccination with 17D non-pathogenic strain of virus gives full protection to the individual for at least: September 2012

Ans: A i.e. 10 years Yellow fever vaccine It is a live, weakened virus. It is given as a single shot. For people who remain at risk, a booster dose is recommended every 10 years. Its administered to * - Persons 9 months through 59 years of age travelling to or living in an area where risk of yellow fever is known to exist, or traveling to a country with an entry requirement for the vaccination. - Laboratory personnel who might be exposed to yellow fever virus or vaccine virus. One should not donate blood for 14 days following the vaccination, because there is a risk of transmitting the vaccine virus through blood products during that period Infants 6 through 8 months of age, pregnant women, and nursing mothers should avoid or postpone travel to an area where there is risk of yellow fever. If travel cannot be avoided, vaccination can be considered. Its not given to: - Infants younger than 6 months of age - Anyone with a severe (life-threatening) allergy to any component of the vaccine, including eggs, chicken proteins, or gelatin, or who has had a severe allergic reaction to a previous dose of yellow fever vaccine