was declared free from Ebola on Saturday after 42 days without a new case, the medical charity Medecins Sans Frontieres
said, but it urged vigilance until the worst-ever recorded outbreak of the virus was extinguished in neighbouring Guinea
and Sierra Leone
Nearly half of those deaths have been in Liberia
, where the outbreak peaked between August and October, with hundreds of cases a week, sparking international alarm. The United States
sent in hundreds of troops to help build treatment clinics in a country founded by freed US slaves.