BACKGROUND :
Is the focus on “leaving no woman, no child, and no adolescent behind” in the context of universal health coverage just rhetoric, or is it leading to measurable change? The BMJ and BMJ Global Health are launching a new collection of articles that explore the data on health inequalities in an attempt to answer this question. The collection’s articles are written by Countdown to 2030 for Women’s, Children’s, and Adolescents’ health, a global collaboration of academics, WHO, UNICEF and civil society, with support from the Partnership for Maternal, Newborn and Child Health (PMNCH).