Dracunculiasis and onchocerciasis.
D004320:Dracunculiasis / Q000453:epidemiology / Q000517:prevention & control*; D019353:Endemic Diseases; D006801:Humans; D009855:Onchocerciasis / Q000453:epidemiology / Q000517:prevention & control*; D011159:Population Surveillance; D012111:Residence Characteristics; D012621:Seasons; D013397:Sudan / Q000453:epidemiology