CDC - DPDx - Onchocerciasis - Centers for Disease Control and ...
Onchocerca volvulus causes onchocerciasis (river blindness). During a blood meal, an infected blackfly (genus Simulium) introduces third-stage filarial larvae onto the skin of the human host, where they penetrate into the bite wound .
Onchocerca volvulus - Wikipedia
Onchocerca volvulus is a filarial (arthropod-borne) nematode (roundworm) that causes onchocerciasis (river blindness), and is the second-leading cause of blindness due to infection worldwide after trachoma.
Onchocerciasis - World Health Organization (WHO)
Jan 11, 2022 · Onchocerciasis, commonly known as “river blindness”, is caused by the parasitic worm Onchocerca volvulus. Symptoms include severe itching, disfiguring skin conditions, and visual impairment, including permanent blindness. More than 99% of infected people live in 31 African countries.
Clinical Overview of Onchocerciasis | Filarial Worms | CDC
May 14, 2024 · Onchocerciasis is caused by the filarial worm Onchocerca volvulus and spreads through repeated bites by blackflies of the genus Simulium. When a blackfly bites a person with onchocerciasis, the blackfly consumes microscopic immature worms, or microfilariae, from the infected person's skin.
About Onchocerciasis | Filarial Worms | CDC
May 14, 2024 · It is caused by the parasite Onchocerca volvulus, a microscopic worm. A parasite is an organism (a living thing) that lives on or inside another organism. Onchocerciasis can cause vision loss, intense itching, rashes, and lumps under the skin.
Onchocerciasis (River Blindness): Symptoms, Types & Treatment
Mar 29, 2023 · Onchocerciasis, or river blindness, is a disease caused by Onchocerca volvulus, a parasitic worm. The parasite spreads through infected flies that breed near rivers and streams in remote areas of Africa and South America.
Onchocerciasis - Wikipedia
Onchocerciasis is a parasitic infection caused by the roundworm species Onchocerca volvulus. The larvae of O. volvulus enter a human host when an infected female adult fly from the genus Simulium bites them. After that, it can take up to three months for the worms to mature under the skin of its host. [11]