Alongside pneumococcal diseases such as meningitis and pneumonia, rotavirus-related diarrhoea is a primary childhood killer in developing countries, thought to snuff out the lives of 500,000 children each and every year. An overwhelming 85 per cent of these children are African and Asian. The need for medical miracles is as great as ever, but corporate mispricing generates huge profits, while driving up the price of life saving medicines.