What causes epidemic typus? - ProProfs
     

What causes epidemic typus?



A. Rickettsia rickettsii
B. Trepomona pallidum
C. Camplobacter jejuni
D. Rickettsia prowazekii

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Microbiology

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1 Answer

John Smith

John Smith

Answered on Sep 09, 2016

Rickettsia prowazekii-rickettsia prowazekii is a species of gram negative, alpha proteobacteria, obligate intracellular parasitic, aerobic bacteria that is the etiologic agent of epidemic typhus, transmitted in the feces of lice. in north america, the main reservoir for r. prowazekii is the flying squirrel. r. prowazekii is often surrounded by a protein microcapsular layer and slime layer; the natural life cycle of the bacterium generally involves a vertebrate and an invertebrate host, usually an arthropod, typically the human body louse. a form of r.. prowazekii that exists in the feces of arthropods remains stably infective for months. r. prowazekii also appears to be the closest free-living relative of mitochondria, based on genome sequencing.

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