A revolutionary five-in-one Australian vaccine for babies ispoised to take on the huge world immunisation market after successful clinical trials in Melbourne. The vaccine prevents meningitis and hepatitis B as well as the diseases covered by the traditional triple antigen vaccine: whooping cough, diphtheria and tetanus. The vaccine, Pentavax, could replace the three-in-one shots that have been used to immunise babies in Victoria for almost half-a-century.