The main target of diarrhoea control programmes in developing countries is successful case-management, primarily through the use of oral rehydration therapy (ORT) and promotion of appropriate feeding during and after an episode of diarrhoea. Preventive strategies for morbid-ity are needed, however, if the estimated annual thousand million episodes of diarrhoea among under-5-year-olds are to be reduced and further decreases in the 3.3 million diar-rhoea-related deaths are to be achieved . A systematic review of potential interventions for the control of diarrhoeal diseases was initiated by WHO in 1982. A total of 18 interventions were evaluated and classified into three groups based on an assessment of their effectiveness and feasibility and the cost-effectiveness of the seven interventions that were identified to have high effectiveness and reasonably strong feasibility was assessed (4, 5).