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Insects as Pest Part B

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

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Insects as Pests of Humans (Part B) Why we sometimes feel lousy V Louse-borne Diseases Sucking lice, such as the human body louse, can transmit diseases: Trench fever and epidemic typhus are examples of serious diseases Typhus: Infection by Rickettsia organisms lead to high fever for two weeks, aches, bronchial disturbance, stupor, and red rash outbreaks Fatality rate high under epidemic conditions Louse Nit (egg) V More Images Related to This Topic V
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Epidemic Typhus Louse bites infected person Rickettsia grow in louse hindgut When the louse eats, It defecates And deposits rickettsia. You inoculate yourself by scratching the infected feces into the open wound Human is infected The disease cycle of typhus is as follows: V More Images Related to This Topic V Importance of Typhus Typhus, as you have already learned, is one of the two most important historical (pre-19th century) diseases vectored by insects Still with us: 20,000 cases in African country of Burundi in 1997 V
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