Ebola outbreak in West Africa

Associated Press
Ebola health care workers carry the body of a middle aged man that they suspected of dying from the Ebola, on the outskirts of Monrovia, Liberia, Saturday, Nov. 8, 2014. Dr. Robert Fuller didn't hesitate to go to Indonesia to treat survivors of the 2004 tsunami, to Haiti to help after the 2010 earthquake or to the Philippines after a devastating typhoon last year. But he's given up on going to West Africa to care for Ebola patients this winter.  (AP Photo/ Abbas Dulleh)

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Liberia has placed 153 people under surveillance as it seeks to control a new Ebola outbreak in the capital more than two months after the country was declared free of the virus, health officials said.

Three Ebola cases emerged in Liberia on Friday. The first of the new patients was a 15-year-old boy called Nathan Gbotoe from Paynesville, a suburb east of the capital Monrovia. Two other family members have since been confirmed as positive and they are all hospitalized.

"We have three confirmed cases and have listed 153 contacts, and we have labeled them as high, medium and low in terms of the risk," Liberia's Chief Medical Officer Dr. Francis Kateh told Reuters late on Saturday.

The West African country has suffered the highest death toll in the worst known Ebola outbreak in history, losing more than 4,800 people. It has twice been declared Ebola-free by the World Health Organization, once in May and again on Sept. 3, only for new cases to emerge.

It is not known how Gbotoe was infected and Kateh did not offer any explanation, saying that investigations were ongoing. Cross-border transmission seems unlikely since neighboring Guinea has zero cases while Sierra Leone was declared Ebola-free this month after 42 days without a case.

The previous resurgence of Ebola in Liberia is thought to have been via sexual transmission since the virus can exist in the semen of male survivors for at least nine months after infection, much longer than its incubation period in blood.

It is also theoretically possible for an infected animal to trigger a fresh chain of transmission. The index case in the West African outbreak that has killed around 11,300 people was a child believed to have been infected by a bat. (Reuters)

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