WHO says single yellow fever shot is enough

May 17, 2013

(AP)—The World Health Organization says a yellow fever booster vaccination given 10 years after the initial shot isn't necessary.

The U.N.'s agency said Friday that its expert group on immunization believes a single dose of vaccination is sufficient to confer lifelong immunity against the disease.

The Geneva-based body says only 12 known cases of yellow fever after vaccination have ever been identified. Some 600 million doses have been dispensed since yellow fever vaccination began in the 1930s.

Yellow fever is an acute viral hemorrhagic disease transmitted by infected mosquitoes that is endemic to 44 countries in of Africa and the Americas.

There are an estimated 200,000 cases of yellow fever and up to 15,000 deaths worldwide each year.

Explore further: Darfur yellow fever outbreak worst in decades

Related Stories

Darfur yellow fever outbreak worst in decades

December 6, 2012
An outbreak of mosquito-borne yellow fever which has killed at least 165 people in Sudan's Darfur region is Africa's worst in decades, the World Health Organisation said on Thursday.

WHO: 107 dead from yellow fever in Darfur, Sudan

November 13, 2012
(AP)—A yellow fever outbreak in Sudan's Darfur region has killed 107 people in the last six weeks, the World Health Organization reported Tuesday, warning that the disease could spread all over the country.

Darfur's yellow fever shows 'no sign of stopping'

December 6, 2012
A rare outbreak of mosquito-borne yellow fever which has killed 165 people in Sudan's Darfur region in the past three months continues to spread, the UN warned on Thursday.

Yellow fever shots begin in Sudan's Darfur

November 22, 2012
Health workers in Sudan's Darfur region have begun vaccinating more than two million people against a rare yellow fever outbreak suspected of killing 124 since late September, medics said on Thursday.

Darfur yellow fever deaths double to 67: UN agency

November 6, 2012
The number of people believed to have died from mosquito-borne yellow fever in Sudan's conflict-plagued Darfur region has doubled to 67, health officials said on Tuesday.

Millions to get yellow fever shots in outbreak-hit Darfur

November 13, 2012
More than two million people in Sudan's Darfur region will be vaccinated against a rare yellow fever outbreak suspected of killing 107 people since late September, health officials said on Tuesday.

Recommended for you

Flu may be spread just by breathing, new study shows; coughing and sneezing not required

January 18, 2018
It is easier to spread the influenza virus (flu) than previously thought, according to a new University of Maryland-led study released today. People commonly believe that they can catch the flu by exposure to droplets from ...

New approach could help curtail hospitalizations due to influenza infection

January 18, 2018
More than 700,000 Americans were hospitalized due to illnesses associated with the seasonal flu during the 2014-15 flu season, according to federal estimates. A radical new approach to vaccine development at UCLA may help ...

Certain flu virus mutations may compensate for fitness costs of other mutations

January 18, 2018
Seasonal flu viruses continually undergo mutations that help them evade the human immune system, but some of these mutations can reduce a virus's potency. According to new research published in PLOS Pathogens, certain mutations ...

Zika virus damages placenta, which may explain malformed babies

January 18, 2018
Though the Zika virus is widely known for a recent outbreak that caused children to be born with microencephaly, or having a small head, and other malformations, scientists have struggled to explain how the virus affects ...

Study reveals how MRSA infection compromises lymphatic function

January 17, 2018
Infections of the skin or other soft tissues with the hard-to-treat MRSA (methicillin-resistant Staphylococcus aureus) bacteria appear to permanently compromise the lymphatic system, which is crucial to immune system function. ...

Fresh approach to tuberculosis vaccine offers better protection

January 17, 2018
A unique platform that resulted in a promising HIV vaccine has also led to a new, highly effective vaccine against tuberculosis that is moving toward testing in humans.

0 comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.