Three diseases at least are caused by mycobacteria : leprosy, tuberculosis and Buruli ulcer. Iron is a prerequisite for the growth of mycobacteria. It is a cofactor for numerous enzymes encoded in the mycobacterium genome. It is required for the cytochromes involved in electron transport. It has been estimated that 7 to 64 g Fe per kg of mycobacterial cell mass is required to support growth. Iron limitation in vitro to levels below these results in growth restriction in many species of mycobacteria, such as M. tuberculosis....