Yellow fever vaccination booster no longer neededListen /
The World Health Organization now says a single dose of yellow fever vaccine is sufficient to confer life long immunity against the disease.
Current international health regulations require individuals living or traveling to countries where yellow fever is endemic to receive a second dose or booster ten years after the initial vaccination.
WHO says that was conclusive evidence to show that immunity conferred after initial vaccination does not decrease with time.
The agency however says vaccination remains the most effective way to prevent yellow fever and travelers will still be obliged to produce a yellow fever vaccination certificate issued by a competent health authority.
Dr Philippe Duclos is a senior health advisor at WHO in Geneva.
"Unlike the traditional wisdom which thought that you need a booster dose of yellow fever vaccine, every 10 years, out strategic advisory group of experts has recommended that actually one dose was enough to protect for life and that actually the booster dose of the vaccine was not needed. The quality of the vaccine that was given many years ago has not changed we have the same good vaccine all along. We will work with the member states, so that we find the best way to adjust this provisions for the duration of validity of the yellow fever vaccination certificate."
Yellow fever is an acute viral hemorrhagic disease transmitted by infected mosquitoes. The disease is endemic to 44 countries in tropical areas of Africa and the Americas.
Dianne Penn, United Nations.