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In Sudan’s capital Khartoum, Ahmed Fahal, directs the Mycetoma Research Centre — the world’s only research centre devoted to a potentially lethal condition caused by flesh-eating fungi and bacteria.

Last May, the World Health Organization added mycetoma to their list of tropical diseases that require attention.

He had planned to talk with scientists from the US Centers for Disease Control and Prevention about monitoring mycetoma, and to find collaborators from universities in the United States, India and Nigeria.

Although mycetoma afflicts impoverished people in at least 23 countries, vanishingly little is known about the malady and there’s no reliable cure.

Transcriber's note: Changed "dioxid" to "dioxide" in several places Made hyphenation of various words consistent Page 74: Corrected misspelling of Phlegmona Page 135: Corrected misspelling of quantity Page 138: changed ',' to '.' at end of sentence Page 208: aquæ rosae changed to aquæ rosæ Page 210: Fixed typographical error "symptyms" into "symptoms" Page 212: Fixed typographical error "Decribe mycetoma" into "Describe mycetoma" Page 213: Fixed typographical error "iodid" into "iodide"