There′s been a huge step forward in the global fight against Ebola.
Liberia，… one of the West African countries hit hardest by the virus， has been declared Ebola－free by the World Health Organization，… after six weeks of no new cases.
In a statement Saturday，… the WHO said interruption of transmission in the country was a monumental achievement.
At the height of the outbreak last August and September，… Liberia was reporting around four－hundred new cases a week.
The Ebola outbreak has killed over eleven－thousand people in West Africa， and remains active in Guinea and Sierra Leone，… although the number of new cases has been falling.