DAKAR, Senegal: A vaccine might be available in large enough quantities by the end of the year to help control West Africa’s Ebola outbreak, says WHO.

There is currently no licensed treatment or vaccine for Ebola, although scientists are testing two vaccines. Ebola is believed to have sickened more than 5,800 people in five West African countries.

Previously experts had said a drug or vaccine was unlikely to be ready in time to help in this outbreak.