Class 12 Biology Human Health Disease Helminth diseases

Helminth diseases

Ascariasis

  • Caused by Ascarislumbricoides
  • Affects intestine of man.
  • Transmitted by contaminated water, vegetable fruits etc.
  • Internal bleeding, muscular pain, fever, anemia, blockage of intestinal passage are common symptoms.

Fig.Ascaris  

                             

Filariasis or elephantiasis

  • Caused by Wuchereriabancrofti and Wuchereriamalayi
  • Affects lymphatic vessels of the lower limbs, genital organs.
  • Transmitted by biting of infected female culex mosquito.
  • Chronic inflammation of the organs where they live, abnormal swellings of the lower limbs, scrotum, penis are common symptoms.

Fig. elephantiasis  

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