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Insects as Pest Part D

Insects as Pest Part D - Insects as Pests of Humans(Part D...

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Insects as Pests of Humans (Part D) Why we sometimes feel lousy V Leishmaniasis Vector: a sandfly, Phebotomus argentipes Eggs and larvae any place with organic matter, heat, humidity. Not aquatic like many True Flies (Diptera) Pathogen: Leishmania spp , which are microscopic flagellated protozoans Mode of attack: the microorganism attacks the phagocytes, which are the 'hunter-killer' cells in the immune system. Phagocytes that have been invaded by protozoa are not recognized as being parasitized. Weakens the immune system. Several kinds of leishmaniasis Occurrence: 12 million cases in world today and increasing Mostly in South America and parts of Asia 350 million at risk Adults are similar to this V More Images Related to This Topic V
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Visceral Leismaniasis (VL) Commonly called Kala-Azar or Dum Dum Fever Symptoms: anemia, enlarged liver & spleen, and susceptibility to other diseases because of weakened immune system Mortality is extremely high in untreated cases Occurrence: 90% of cases in Brazil, Sudan, Bangladesh, Nepal, India 500,000 new cases annually AIDS increases risk of VL and VL increases risk of AIDS because both diseases weaken immune system Also, new way of getting VL without sand fly vector -- addicts sharing needles.
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