The World Health Organisation (WHO) Tuesday welcomed the approval of a Swiss regulatory authority for a trial with an experimental Ebola vaccine at the Lausanne University Hospital. According to Swissmedic which is the Swiss regulatory authority for therapeutic products approval means the vaccine can be tested on approximately 120 individuals in Lausanne Xinhua reported. The trial which is receiving support from WHO is the latest in a series of trials that are ongoing in Mali Britain and the US. The vaccine 'ChAd-Ebola' developed by the US National Institute of Allergy and Infectious Diseases and pharmaceutical company GlaxoSmithKline consists of a