This article analyses the respective impact of aid, remittances and medical brain drain (MBD) on child mortality using panel and cross-country quintile-level data on respectively 84 and 46 developing countries. Our results show that remittances reduce child mortality while MBD increases it. Health aid also significantly reduces child mortality but its impact is less robust than the impact of remittances. Remittances seem to be more effective in reducing mortality for children belonging to households from the upper classes, whereas neither a pro-poor nor anti-poor effect is found for health aid.