Dakar — Dozens of organisations have started a massive emergency vaccination campaign in Congo against the largest yellow fever outbreak in decades, trying to stop its global spread.
Vaccine supplies are limited. The World Health Organization says it must now use one-fifth the standard vaccine dose, which lasts about a year.
Doctors Without Borders, Save the Children and others are joining Congo's government and the WHO in targeting about 10.5 million people over the next 10 days.
They are trying to stop the spread of yellow fever in Congo's capital, Kinshasa, and on the border with Angola, where the outbreak began.
Save The Children has warned the mosquito-spread virus could soon spread to the Americas, Asia and Europe and elsewhere in Africa.
The aid group says the outbreak has claimed nearly 500 lives.