he has a two and a half year contract with them, the chairman, steve parrish has said, we are delightede that somebody of sam alla rdyce's calibre —— and it fortunate that somebody of sam allardyce's calibre and ability is available. and they say that he will take charge of the first—team squad as they play watford on boxing day. it's claimed that an experimental vaccine has been found to be highly effective in preventing the deadly ebola virus. the trial was conducted in guinea, one of the west african countries most affected by an outbreak of the disease that ended this year. andy beatt reports. voiceover: a major milestone in the fight against ebola. tests of an experimental vaccine in guinea found a pioneering treatment to be up to 100% effective. nearly 6,000 people received the vaccine. all were free of the virus ten days later. the trial has been stopped early, in order to immunise everyone exposed to ebola across the country. what we have shown is that in the vaccinated people we have had zero cases of ebola, while at the same time we have had 23 cases in the people who were not