Abstract

Enhanced international research efforts since the establishment of the Global BU Initiative in 1998 by the WHO have helped to advance our understanding of the epidemiology, and pathogenesis of Mycobacterium ulcerans infections. Improved methods to cultivate the extremely slow-growing pathogen from BU lesions have laid the groundwork for a variety of studies using M. ulcerans isolates, including the analysis of the genome and proteome of the pathogen, as well as drug susceptibility testing and analyses of host-pathogen interactions in vitro and in animal models. The identification of specific, high-copy number target sequences in the genome of M. ulcerans has enabled the development of diagnostic tests and assays to detect the pathogen in the environment. Important research questions remain about the reservoir(s) of M. ulcerans in aquatic environments, factors leading to or promoting transmission to hosts, and host-pathogen interactions resulting in chronic infection versus spontaneous healing.

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