Onchocerciasis is a Neglected Tropical Disease, which the
Centers for Disease Control and Prevention (CDC) classify as "a group ofparasitic and bacterial diseases that cause substantial illness for more thanone billion people globally." The disease is caused by the parasitic worm
Onchocercavolvulus and is transmitted via bites fromblackflies. The infection of river blindness can, as the name implies, lead toblindness, as well as skin disease. This condition ranks "second only totrachoma as an infectious cause of blindness," according to the CDC.
Elephantiasis is another Neglected Tropical Disease, onethat afflicts approximately 120 million people currently, according to
WorldHealth Organization estimates. The disease is caused by the transmittance offilarial parasites to humans via mosquito bites. When the larvae of theparasites are transferred, they target the lymphatic system, and in the worstcases, this disease leads to thickening of the skin and massive tissueswelling, which causes severe disfigurement and impedes everyday life.