Filariasis is a very common disease in northern region of Bangladesh and many other countries including African countries. The name of the organism is Wuchereria bancrofti and Brugia malayi. ( Pic: microfilaria of Wuchereria bancrofti in blood) Most of the species of mosquito can transmit the disease by carrying larva( called microfilaria) from infected person during their blood meal. Only the female mosquito can transmit the disease. After infection a man harbour the filarial worm for about five years in their lymphatic tissue. During this period this person could be a source of infection. We can prevent this transmission by giving albendazole 400 and 300mg diethycarbamazine (adult dose) yearly for five years to both infected and uninfected persons in an endemic area. Chronic filariasis can cause elephantiasis-swelling of legs, hands, scotum, labia or breast. Swelling of breast can be cofused with breast tumor. So the history of residence is very important in this instance. In infected person, a small larva, called microfilaria can be found in blood, chylous urine( milky white), hydrocele fluid and other body fluids. See two video clips of microfilaria in blood and urine.
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