Three new cases of Ebola have been confirmed in Liberia less than 3 months after the country was declared free of the virus, the world health organization has said. The three patients include a 10-year-old boy. All people with the symptom have been isolated, who spokeswoman Margaret Harris said, Liberia has seen more than 10,000 Ebola cases and more than 4,000 deaths. The country's health minister said six of the boy's relatives and other high-risk contacts have been taken to an Ebola treatment unit in Paynesville. On Thursday night, before the new case emerged, president Ellen Johnson Sirleaf delivered a speech praising "the resilience" of Liberians in overcoming the epidemic.