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Text File  |  1992-09-02  |  409b  |  11 lines
  1. Collective term for several diseases,
  2. prevalent in tropical areas, caused by
  3. certain roundworm (nematode) parasites.
  4. Symptoms include blocked and swollen lymph
  5. vessels leading to grotesque swellings of the
  6. legs and genitals (Bancroftian filariasis,
  7. elephantiasis); and blindness and dry, scaly
  8. skin (onchocerciasis). The disease-causing
  9. worms are spread mainly by insects, notably
  10. mosquitoes and black flies.
  11.