River blindness, or Onchocerciasis, affects almost 40 million people — most of them in Africa. Typically transmitted through the bite of black flies, which breed in water, the disease persists despite efforts towards eradication.
Worldfocus contributor Samuel Loewenberg travels to the east African country of Tanzania to look at the impact of river blindness on one village, where the only source of water is also a breeding ground for disease.





07/16/2009 :: 11:06:59 AM
Dr. R.W. Dunbar, Ag. Directo,r (the then) E.A.Institute Malaria and Vector Borne Diseases. Amani, Tanzania 1966-68 Says:
Utterly ridiculous and misleading. All black flies have aquatic larval and pupal stages in running water only. In Africa, some of the 30+ species of the ‘Simulium Edwardsellum damnosum’ sibling species complex and some in the ‘S. neavei’ group (generally upland, living commensally on freshwater crabs) transmit the disease from human to human. Water is most definitely not involved in river blindness transmission, only the breeding of black flies.
Further, check out the VERY successful results of WHO Onchocerciasis Control Programmes in West Africa.