More than 3,000 people have died from the Guinea virus since 1990 . Guinea , Liberia and Sierra Leone have been hit hardest . The United Nations World Food Programme is feeding people in affected areas . They use megaphones and ` ` air bridges '' to prevent contamination .
More than 3,000 people have died from the Ebola virus since March . Guinea , Liberia and Sierra Leone have been hit hardest . The United Nations World Food Programme is feeding people in affected areas . Workers use megaphones and `` air bridges '' to avoid contamination .