Two vaccines that give preliminary indications of providing effective and reliable immunization against the deadly Ebola virus ravaging West Africa will not be ready for testing until next March the World Health Organization (WHO) said. Developing a vaccine usually takes time and is expensive the WHO said. 'Even in best conditions and with the huge effort of many involved a significant number of doses will not be available until the first quarter of 2015' the organisation said in a statement. 'The aim is to complete in a few months the work that usually takes two to four years without compromising