DAKAR, Senegal (AP) — The Ebola outbreak ravaging West Africa is “totally out of control,” according to a senior official for Doctors Without Borders, who says the medical group is stretched to the limit in responding.

The outbreak has caused more deaths than any other of the disease, said another official with the medical charity. Ebola has been linked to more than 330 deaths in Guinea, Sierra Leone and Liberia, according to the World Health Organization.