During an outbreak of pellagra in Mozambique from February to October 1990, Henry explore how he could help eradicate and contain the pellagra epidemic. Given that refugees are fed a very narrow range of foods (ie. a cereal, a legume, oil and sugar) he struck upon the idea of using food fortification of refugees’ rations to combat pellagra. He devised a food fortification plant commissioned in Malawi that was used to provide the refugees adequate nutrients in their diet. This technique was used for the first time within a refugee camp. 