CDC - DPDx - Onchocerciasis
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.
Clinical Overview of Onchocerciasis | Filarial Worms | CDC
2024年5月14日 · 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.
Onchocerciasis - World Health Organization (WHO)
2022年1月11日 · Onchocerciasis – or “river blindness” – is a parasitic disease caused by the filarial worm Onchocerca volvulus. It is transmitted through the bites of infected blackflies (Simulium spp.) that breed in fast-flowing rivers and streams, mostly in remote villages located near fertile land where people rely on agriculture.
About Onchocerciasis | Filarial Worms | CDC
2024年5月14日 · Onchocerciasis, or river blindness, is a skin and eye disease. 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.
蟠尾絲蟲症 - 维基百科，自由的百科全书
蟠尾絲蟲症 或 蟠尾絲蟲病 （拉丁語： Onchocerciasis），又名 河川盲 、 河盲症 （river blindness），是一種因感染蟠尾絲蟲引起的疾病。 病狀包括嚴重搔癢、皮下腫塊，以及 失明 [1]。 其同時是全球僅次於 沙眼 的可造成 失明 之第二大 感染症 [2]。 蟠尾絲蟲會透過 蚋屬 的 蚋 （又名黑蠅，Black fly）叮咬而散播 [1]。 通常需要經過多次叮咬才會感染 [3]。 這些黑蠅生活在河流旁，這就是這種病得名河盲症的原因 [2]。 蟠尾絲蟲成蟲一旦進入人體後，進行有性生殖產出微 …
Onchocerciasis (River Blindness): Symptoms, Types & Treatment
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. Symptoms include a potentially disfiguring skin rash and vision problems, even blindness.
Onchocerciasis - StatPearls - NCBI Bookshelf
2023年8月25日 · Onchocerciasis, also known as the African river blindness, is the second most important cause of infectious blindness worldwide after trachoma. It is caused by the filarial nematode, Onchocerca volvulus, and transmitted by repeated bites of the vector, female black fly of the genus Simulium damnosum.
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]
Onchocerca volvulus : the road from basic biology to a vaccine
Human onchocerciasis caused by Onchocerca volvulus and spread by the bite of infected Simulium black flies (Figure 1) remains one of the most important neglected tropical diseases (NTDs).