Ebola is dead in Liberia, the World Health Organization has declared. The welcome news comes after more than four thousand citizens of the West African nation died of the disease, more than in any other country.
No new cases of the virus have been reported in 42 days — that's the number of days the World Health Organization requires to consider a country Ebola-free. 42 days is twice the maximum incubation period for the virus.

The last confirmed death in Liberia was on March 27. On Saturday (May 9) the World Health Organization said in a statement, "The outbreak of Ebola virus disease in Liberia is over." President Ellen Johnson Sirleaf added, "We will celebrate our communities which have taken responsibility and participated in fighting this unknown enemy and finally we've crossed the Rubicon. Liberia indeed is a happy nation."
Hopefully the progress will soon spread to neighboring Guinea and Sierra Leone, which are still fighting the deadly virus outbreak. Ebola has claimed over 11,000 lives in Africa in the past year.

(Photo: ZOOM DOSSO/AFP/Getty Images)