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HOW KALA-AZAR IS TRANSMITTED?

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Kala-azar

  • Kala-azar is a vector borne disease
  • Sandfly of genus Phlebotomus argentipes are the only known vectors of kala-azar in India
  • Indian Kala-azar has a unique epidemiological feature of being Anthroponotic; human is the only known reservoir of infection
  • Female sandflies pick up parasite (Amastigote or LD bodies)while feeding on an infected human host.
  • Parasite undergo morphological change to become flagellate (Promastigote or Leptomonad), development and multiplication in the gut of sandflies and move to mouthparts.
  • Healthy human hosts get infection when an infective sandfly vector bites them.