In 2009, a humanitarian response was launched to address a food security and livelihoods crisis in Karamoja, Uganda. During a polio immunization campaign in mid-August 2009, health workers in Nakapiripit District reported a concern about an increase in mouth sores, or angular stomatitis (AS) and gum ulcerations, among children in one village, and an investigation was launched.This article describes the investigation, lessons learned, and provides guidance for monitoring micronutrient deficiencies among populations receiving food assistance.An investigation into a suspected outbreak of riboflavin (vitamin B2) deficiency was initiated, including a rapid assessment, mass screening, a convenience sample collection of blood specimens (n = 58 symptomatic cases and n = 18 asymptomatic individuals), and analysis of the general food ration (70

作者：Erin K, Nichols；Leisel E, Talley；Nelly, Birungi；Amanda, McClelland；Elizabeth, Madraa；Agnes B, Chandia；Jacqueline, Nivet；Rafael, Flores-Ayala；Mary K, Serdula

来源：PloS one 2013 年 8卷 5期