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CBSE Class 12-science Answered

what are the infective stages of diseases like malaria,typhoid,pneumonia,amoebiasis,elephantiasis?
Asked by imtiyazmulla68 | 22 Mar, 2018, 08:30: PM
answered-by-expert Expert Answer

The stage in the life cycle at which the parasite is able to initiate an infection to its host is referred to as an infective stage. This stage is mostly seen in parasites and provides a link between the pre-parasitic and parasitic phases of the life cycle. Typhoid and pneumonia are caused by bacteria. Hence, they do not exhibit any infective stages.

Infective stages of diseases caused by parasites/worms:

 

  • Malaria: Sporozoite
  • Amoebiasis: Trophozoite
  • Elephantiasis: L3i

 

 
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