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Filariasis is a disease caused by roundworms. It is spread by mosquitoes. A mosquito bites the skin of an infected person and becomes infected. Next, the mosquito bites some other person. It passes the young roundworms into the bloodstream. They grow and develop in the blood. The worms spread to the lymph system, which is a system in the body that has vessels and nodes that carry lymph fluid to the blood. This can cause serious problems. Filariasis needs care right away. Serious infection may lead to permanent and long-term disability. Treatment includes drug therapy, lifestyle changes, and surgery in case of heavy infestation.

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