WHO Calls for Screening of All Departing Travellers from Ebola Affected Countries The World Health Organization has called for exit screenings of all travellers from affected countries. It wants checks at airports, sea ports and major land crossings. Several airlines have already stopped flying to Guinea, Liberia and Sierra Leone. Cameroon has closed its land, sea and air borders with Nigeria. The UN's Chief Co-ordinator in Sierra Leone, David McLachlan-Karr, said Ebola has spread to 12 out of 13 of the country's districts. Meanwhile reports say seventeen suspected Ebola patients are missing in Liberia after a health centre in the capital was attacked. The government had previously denied they were missing, saying all patients had been moved to another facility. The Ebola outbreak, which has spread from Guinea to Liberia, Sierra Leone and Nigeria, has killed at least one thousand 145. Source: BBC