15 Million to receive Vaccination to Contain Yellow Fever in Central Africa

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The World Health Organization is leading a mass yellow fever vaccination campaign in central Africa to prevent the national and international spread of this deadly disease.  The campaign, which begins this month, aims to vaccinate 15.5 million people in Angola and the Democratic Republic of Congo.

A yellow fever outbreak began late last year in the Angolan capital, Luanda and spread quickly throughout the country. The disease also spread to neighboring Democratic Republic of Congo.

The two-month vaccination campaign is being held in advance of the next rainy season in September, when mosquitos come out and transmission goes up.

Bruce Aylward is WHO executive director of Outbreaks and Health Emergencies.  He says this outbreak is particularly dangerous because it is occurring in large cities.

He says massive outbreaks of yellow fever can occur in urban settings because mosquitos can rapidly infect thousands of people.

“With that explosive spread and the number of cases, you can see very high mortality rates," he said. "These can be very dangerous, destabilizing events; but, the other concern is when urban outbreaks take off in these areas, there is a risk then of international spread of this virus.”

Aylward says two cases were reported in Kenya and 11 cases were brought to China by Chinese men who had been working in Angola.  Yellow fever is endemic in 47 countries, 33 of them in Africa. Most of the rest are in South America.