title: Update: dracunculiasis eradication, Ghana and Nigeria, 1991.
mesh_terms: D003430:Cross-Sectional Studies; D003906:Developing Countries; D004320:Dracunculiasis / Q000453:epidemiology / Q000517:prevention & control*; D005869:Ghana / Q000453:epidemiology; D006801:Humans; D015994:Incidence; D009549:Nigeria / Q000453:epidemiology; D011159:Population Surveillance