We wish to thank: Professor Peter Chiodini, (Director of the Hospital for Tropical Diseases and London School of Hygiene and Tropical Medicine, UK) for prompt return of diagnostic test results and expert interpretation; Dr. Pedro Albajar Vinas and colleagues at the WHO Chagas Disease Division in Geneva Switzerland for their expert advice and rapid delivery of antiparasitic medication; the mothers of the infants for consenting to be included in this study.