Introduction
WEST
Mortality in children younger than 5 years remains among the highest in the world in West and Central Africa.Prior work suggests that mortality in those younger than 5 years is associated with distance to health care facilities. Pooled analyses have demonstrated that mortality in infants and children in low- and middle-income settings increases as distance from health care facilities increases, even among those living within 2 km from a facility.Azithromycin mass administration to children younger than 5 years has been found to reduce child mortality in sub-Saharan African settings.Using data from the Niger site of the MORDOR (Macrolides Oraux pour Réduire les Décès avec un Oeil sur la Résistance) cluster randomized trial (list of investigators in eAppendix in 