Dracunculiasis/epidemiology; Dracunculus Nematode/growth & development; Age Factors; Animals; Anthelmintics/therapeutic use; Arthropods; Climate; Disability Evaluation; Disease Reservoirs; Disease Vectors; Dracunculiasis/diagnosis; Dracunculiasis/drug therapy; Dracunculiasis/history; Dracunculiasis/immunology; Dracunculiasis/mortality; Dracunculiasis/pathology; Dracunculiasis/physiopathology; Dracunculiasis/surgery; Dracunculus Nematode/anatomy & histology; Dracunculus Nematode/classification; Dracunculus Nematode/drug effects; Dracunculus Nematode/embryology; Dracunculus Nematode/physiology; Ecology; Female; Gastric Juice; History, 17th Century; History, 18th Century; History, 19th Century; History, 20th Century; History, Ancient; History, Medieval; Injections, Intraperitoneal; Larva/growth & development; Male; Metamorphosis, Biological; Microscopy, Electron; Seasons