Which members of phylum cause elephantiasis?

Elephantiasis is a disease of lymphatic system (a network of vessels that transport fluid, fat, proteins and white blood cells to the bloodstream as lymph and remove micro organisms from tissues). A large enlargement of the infected area characterizes this disease. The hardened skin of the infected area resembles the hide (skin) of an elephant. That is the reason why this disease is known as elephantiasis. The disease is caused by the blockage of the lymphatic system by thread-like filarial worms, usually Wuchereria bancrofti (a nematode). The parts of the body most frequently affected are the limbs. The disease is treated with the antifilarial drug or with surgery.