Liberia Ebola epidemic 'over', ending West African outbreak
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Liberia's Ebola epidemic is over, says the World Health Organization (WHO), effectively putting an end to the world's worst outbreak of the disease.
The "end of active transmission" was declared, after 42 days without a new case in Liberia.
It joins Guinea and Sierra Leone, which earned the status last year.
However, the WHO warned that West Africa may see flare-ups of the virus. It has killed more than 11,000 people since December 2013.
'Most critical' months
A country is considered free of human-to-human transmission once two 21-day incubation periods have passed since the last known case tested negative for a second time.
The WHO said, in a statement, that "all known chains of transmission have been stopped in West Africa", with no cases reported for at least 42 days in Liberia, Guinea and Sierra Leone, the three states hardest-hit by the outbreak.
"So much was needed and so much was accomplished by national authorities, heroic health workers, civil society, local and international organizations and generous partners," said WHO chief Margaret Chan.
Analysis: Anne Soy, BBC Africa health correspondent
AFP
It is a huge relief that the most devastating outbreak of Ebola is over. Liberia, Sierra Leone and Guinea now face the mammoth task of recovery.
The outbreak affected virtually every sector in these three countries. It exposed their weak health systems, which collapsed under the pressure of the epidemic.
Yet these countries are also badly affected by other deadly diseases, like malaria and tuberculosis, which were mostly ignored during the outbreak.
More than 17,000 Ebola survivors are dealing with a wide range of complications and social stigma. They include orphans with an uncertain future.
The economies of the three countries were also adversely affected. Sierra Leone was one of the fastest-growing economies in the world, with double digit growth figures. But Ebola sank it into severe recession.
The road to complete recovery will be long and treacherous. It will no doubt continue to test the resilience of the three countries.
The end of active transmission of Ebola has been declared twice before in Liberia - only for the infection to re-emerge.
WHO said it anticipated "more flare-ups", and Liberia, Sierra Leone and Guinea "remain at high risk of additional small outbreaks" of Ebola.
"Evidence shows that the virus disappears relatively quickly from survivors, but can remain in the semen of a small number of male survivors for as long as one year, and in rare instances, be transmitted to intimate partners," it added.
Dr Chan described the next three months as "the most critical" for the three West African nations, which accounted for almost all of the deaths from the outbreak.
"By the end of this year, we expect that all survivors will have cleared the virus from their bodies," she was quoted as saying by the AFP news agency.
Ebola deaths
Figures up to 6 January 2016
11,315
Deaths - probable, confirmed and suspected
(Includes one in the US and six in Mali)
- 4,809 Liberia
- 3,955 Sierra Leone
- 2,536 Guinea
- 8 Nigeria
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Medical charity Medecins Sans Frontieres (MSF) said, in a statement, that the end of the "devastating and unprecedented epidemic" was a day of celebration and relief.
"We must all learn from this experience to improve how we respond to future epidemics and to neglected diseases," it added.
MSF was the first to warn of the danger Ebola posed when cases were reported in 2013, while the WHO downplayed the threat.
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