OTTAWA, Ontario (AP) — The Canadian government said it will start shipping its experimental Ebola vaccine to the World Health Organization on Monday for possible use in the West African countries hardest hit by the outbreak.

The government said in a news release Saturday that the Public Health Agency of Canada is supplying the vaccine to the U.N. agency in Geneva. The WHO is the international coordinating body for battling the Ebola outbreak which has killed more than 4,500 people in West Africa.