The Global Enteric Multicenter Study (GEMS) was supported by a grant from the Bill & Melinda Gates Foundation (Grant No. 38874, Myron M. Levine, Principal Investigator). The investigators thank the parents and caretakers from households who participated in the surveys at the seven GEMS sites. We also thank the teams of investigators and staff at each study site, at the Data Coordinating Center and at the Center for Vaccine Development whose enthusiastic support was invaluable in allowing the studies to be completed.