Child mortality is a leading cause of concern in many developing countries. Lack of necessary healthcare facilities has resulted in children's death due to infectious diseases such as pneumonia, diarrhoea and other complications related to preterm birth. However, most of these diseases are avoidable with inexpensive interventions like appropriate nutrition, breastfeeding and vaccination. A recent study, led by researchers from the Johns Hopkins Bloomberg School of Public Health, USA, and involving researchers from the UK, Switzerland, Canada and India, has provided some insights into how well India has fared in reducing child mortality. The study provides estimates of child mortality at a national, regional and state level in India and is published in the journal The Lancet Global Health.