اونکوسرکوزیس و کوری رودخانه ای

 Onchocerciasis is the world's second leading infectious cause of blindness 

Rarely life-threatening, the disease causes chronic suffering and severe disability. In Africa, it constitutes a serious obstacle to socioeconomic development. It is often called river blindness because of its most extreme manifestation and because the blackflies that transmit the disease abound in riverside areas, where they breed in fast-flowing waters. Fertile riverine areas are frequently abandoned for fear of the disease. 

The disease is caused by Onchocerca volvulus. It is mostly found in Africa but also a few countries in Latin America. A parasitic worm, Onchocerca volvulus, of the amily filariidae, lives in the human body for up to 14 years. Rarely life-threatening, the disease causes chronic suffering and severe disability. The male is 2-3 cm long and the female is up to 60 cm long. The vector for this parasite is the blackfly.

.

میاز داخل چشم

removed a 2 centimeter long botfly larva from a child's eye socket.Only one bot fly species attacks humans, the Dermatobia hominis. From Wikipedia: Botflies deposit eggs in a host body, or sometimes use an intermediate vector: common houseflies for example. Eggs are deposited in animal skin directly, or the larvae drop from the egg: the body heat of the animal induces hatching upon contact. Some forms of botfly also reside in the digestive tract when consumed by a licking action. Myiasis can be caused by larvae burrowing into the skin (or tissue lining) of the host animal. Mature larvae drop from the host and complete the pupal stage in soil.