2024年2月21日 · Black flies bite humans and animals, causing nuisance, pain, discomfort, or even livestock death. They often bite people around their necks and heads. If a massive swarm of black flies...

Black flies are central to the transmission of the parasitic nematode Onchocerca volvulus which causes onchocerciasis, or "river blindness", which is endemic in parts of South America, Africa, and the Arabian Peninsula.

2023年3月29日 · 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 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 their host. [11] .

2022年1月11日 · 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.

Black flies, known also as "buffalo gnats" and "turkey gnats," are very small, robust flies that are annoying biting pests of wildlife, livestock, poultry, and humans. Their blood-sucking habits also raise concerns about possible transmission of disease agents.

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 .

Onchocerciasis, filarial disease caused by the helminth Onchocerca volvulus, which is transmitted to humans by black flies in the genus Simulium. It is often called river blindness because the flies that transmit the disease breed on rivers and mostly affect riverine populations.

2023年8月25日 · Onchocerciasis, also known as river blindness, is the second commonest cause of infectious blindness in the world and is transmitted through the repeated bites of the Black fly (Simulium damnosum), which acts as the vector.

2024年5月14日 · Onchocerciasis is also known as river blindness. It is found mostly in Africa and spread by blackfly bites. Treat onchocerciasis with antiparasitic drugs. Onchocerciasis, or river blindness, is a skin and eye disease. It is caused by the parasite Onchocerca volvulus, a microscopic worm.