(Reuters) Families hiding infected loved ones and the existence of "shadow zones" where medics cannot go mean the West African Ebola epidemic is even bigger than thought, the World Health Organization said on Friday.
Some 1,427 people have died among 2,615 known cases of the deadly virus in West Africa since the outbreak was first identified in March, according to new figures released by the WHO on Friday.
However the U.N. agency, which has faced criticism that it moved too slowly to contain the outbreak, said that many cases had probably gone unreported.