It is believed that worming suffers a third of the world population, mainly in Africa (South of Sahara), South Asia, and Central and South America. Widely distributed nematodes (roundworms) of the family Onchocercidae. One of the diseases that they cause – the so-called onchocerciasis. The causative agent, Onchocerca volvulus, settles in the lymph nodes of humans where females produce many larvae, called microfilariae. These larvae then migrate under the epidermis of the skin, where they can get to the insect vectors. The larvae enters the human eye, penetrating into all tissues of the visual organ. Inside the eye they cause inflammation, bleeding and other complications, leading eventually to loss of vision. Because midges are vectors live on the banks of the rivers, the disease is called river blindness. There are about 18 million patients with onchocerciasis, of whom about 600 thousand the disease has led to significant loss of vision or complete blindness.
Another famous disease, visivamente, Onchocercidae – the elephantiasis, or elephantiasis, when some part of the body, e.g., leg, enormously increases in size due to the stagnation of lymph, which leads to overgrowth of the skin and subcutaneous tissue. Strictly speaking, elephantiasis is a symptom of Brugia caused by the nematode Brugia malayi, a parasite in the lymph and blood vessels. According to statistics, at present, “clanovima nematodes” infected approximately 100 million people. Continue reading