For many years millions of small children have died from infectious diseases and the main cause of this tragedy is simply poverty and often a lack of political will. The six diseases which together take most lives, whooping cough, diphtheria, tuberculosis, measles, tetanus and polio, can all be easily prevented by immunisation. In 1983, the Task Force for Child Survival and Development was formed. Its aim was to give every child a healthy start in life, in part by striving to immunise 80 per cent of children under one year old by 1990. This series of three programmes, produced in 1991, explores the history and success of this immense undertaking in the developing countries, the obstacles that had to be overcome and the continuing problems of poverty, a growing populations and AIDS.