What parasite causes elephantiasis?

Elephantiasis is primarily caused by the parasitic infection known as lymphatic filariasis, which is typically triggered by the filarial worms Wuchereria bancrofti, Brugia malayi, or Brugia timori. These worms are transmitted to humans through the bites of infected mosquitoes. The infection leads to severe swelling and thickening of the skin and underlying tissues, particularly in the legs and genitals. Early diagnosis and treatment can help prevent the progression of the disease.